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@ARTICLE{Burlaga2016,
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@ARTICLE{Burlaga2018,
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@ARTICLE {Gurnett2013,
	author = {Gurnett, D. A. and Kurth, W. S and Burlaga, L. F. and Ness, N. F.},
	title = {In Situ Observations of Interstellar Plasma with Voyager 1},
	volume = {341},
	number = {6153},
	pages = {1489--1492},
	year = {2013},
	doi = {10.1126/science.1241681},
	publisher = {American Association for the Advancement of Science},
	abstract = {Last summer, it was not clear if the Voyager 1 spacecraft had finally crossed the heliopause -- the boundary between the heliosphere and interstellar space. Gurnett et al. (p. 1489, published online 12 September) present results from the Plasma Wave instrument on Voyager 1 that provide evidence that the spacecraft was in the interstellar plasma during two periods, October to November 2012 and April to May 2013, and very likely in the interstellar plasma continuously since the series of boundary crossings that occurred in July to August 2012.Launched over 35 years ago, Voyagers 1 and 2 are on an epic journey outward from the Sun to reach the boundary between the solar plasma and the much cooler interstellar medium. The boundary, called the heliopause, is expected to be marked by a large increase in plasma density, from about 0.002 per cubic centimeter (cm-3) in the outer heliosphere, to about 0.1 cm-3 in the interstellar medium. On 9 April 2013, the Voyager 1 plasma wave instrument began detecting locally generated electron plasma oscillations at a frequency of about 2.6 kilohertz. This oscillation frequency corresponds to an electron density of about 0.08 cm-3, very close to the value expected in the interstellar medium. These and other observations provide strong evidence that Voyager 1 has crossed the heliopause into the nearby interstellar plasma.},
	issn = {0036-8075},
	journal = {Science}
}

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@ARTICLE{Kim2017,
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archivePrefix = "arXiv",
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}

@INPROCEEDINGS{Lario2005,
   author = {{Lario}, D. and {Hu}, Q. and {Ho}, G.~C. and {Decker}, R.~B. and 
	{Roelof}, E.~C. and {Smith}, C.~W.},
    title = "{Statistical Properties of Fast Forward Transient Interplanetary Shocks and Associated Energetic Particle Events: ACE Observations}",
booktitle = {Solar Wind 11/SOHO 16, Connecting Sun and Heliosphere},
     year = 2005,
   series = {ESA Special Publication},
   volume = 592,
   editor = {{Fleck}, B. and {Zurbuchen}, T.~H. and {Lacoste}, H.},
    month = sep,
    pages = {81},
   adsurl = {http://adsabs.harvard.edu/abs/2005ESASP.592...81L},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{Leerungnavarat2003,
   author = {{Leerungnavarat}, K. and {Ruffolo}, D. and {Bieber}, J.~W.},
    title = "{Loss Cone Precursors to Forbush Decreases and Advance Warning of Space Weather Effects}",
  journal = {Astrophysical Journal},
 keywords = {ISM: Cosmic Rays, Interplanetary Medium, Shock Waves, Sun: Solar-terrestrial Relations},
     year = 2003,
    month = aug,
   volume = 593,
    pages = {587-596},
      doi = {10.1086/376408},
   adsurl = {http://adsabs.harvard.edu/abs/2003ApJ...593..587L},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{Liu2014,
   author = {{Liu}, Y.~D. and {Richardson}, J.~D. and {Wang}, C. and {Luhmann}, J.~G.
	},
    title = "{Propagation of the 2012 March Coronal Mass Ejections from the Sun to Heliopause}",
  journal = {Astrophysical Journal Letters},
archivePrefix = "arXiv",
   eprint = {1405.6086},
 primaryClass = "physics.space-ph",
 keywords = {shock waves, solar-terrestrial relations, solar wind, Sun: coronal mass ejections: CMEs, Sun: heliosphere },
     year = 2014,
    month = jun,
   volume = 788,
      eid = {L28},
    pages = {L28},
      doi = {10.1088/2041-8205/788/2/L28},
   adsurl = {http://adsabs.harvard.edu/abs/2014ApJ...788L..28L},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{Lockwood1986,
   author = {{Lockwood}, J.~A. and {Webber}, W.~R. and {Jokipii}, J.~R.},
    title = "{Characteristic recovery times of Forbush-type decreases in the cosmic radiation. I - Observations at earth at different energies}",
  journal = {Journal of Geophysical Research},
 keywords = {Cosmic Rays, Forbush Decreases, Earth Environment, Imp, Modulation, Solar Cycles, Solar Magnetic Field, Two Dimensional Models},
     year = 1986,
    month = mar,
   volume = 91,
    pages = {2851-2857},
      doi = {10.1029/JA091iA03p02851},
   adsurl = {http://adsabs.harvard.edu/abs/1986JGR....91.2851L},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{McComas2009,
   author = {{McComas}, D.~J. and {Allegrini}, F. and {Bochsler}, P. and 
	{Bzowski}, M. and {Collier}, M. and {Fahr}, H. and {Fichtner}, H. and 
	{Frisch}, P. and {Funsten}, H.~O. and {Fuselier}, S.~A. and 
	{Gloeckler}, G. and {Gruntman}, M. and {Izmodenov}, V. and {Knappenberger}, P. and 
	{Lee}, M. and {Livi}, S. and {Mitchell}, D. and {M{\"o}bius}, E. and 
	{Moore}, T. and {Pope}, S. and {Reisenfeld}, D. and {Roelof}, E. and 
	{Scherrer}, J. and {Schwadron}, N. and {Tyler}, R. and {Wieser}, M. and 
	{Witte}, M. and {Wurz}, P. and {Zank}, G.},
    title = "{IBEX -- Interstellar Boundary Explorer}",
  journal = {Space Science Reviews},
 keywords = {Interstellar boundary, Termination shock, Heliopause, Energetic Neutral Atom, ENA, LISM, Energetic Neutral Atom},
     year = 2009,
    month = aug,
   volume = 146,
    pages = {11-33},
      doi = {10.1007/s11214-009-9499-4},
   adsurl = {http://adsabs.harvard.edu/abs/2009SSRv..146...11M},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{Ness1964,
   author = {{Ness}, N.~F. and {Wilcox}, J.~M.},
    title = "{Solar Origin of the Interplanetary Magnetic Field}",
  journal = {Physical Review Letters},
     year = 1964,
    month = oct,
   volume = 13,
    pages = {461-464},
      doi = {10.1103/PhysRevLett.13.461},
   adsurl = {http://adsabs.harvard.edu/abs/1964PhRvL..13..461N},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{Papailiou2011,
   author = {{Papailiou}, M. and {Mavromichalaki}, H. and {Belov}, A. and 
	{Eroshenko}, E. and {Yanke}, V.},
    title = "{Precursor Effects in Different Cases of Forbush Decreases}",
  journal = {Solar Physics},
 keywords = {Cosmic rays, Forbush decreases, Neutron monitors, Precursors},
     year = 2012,
    month = feb,
   volume = 276,
    pages = {337-350},
      doi = {10.1007/s11207-011-9888-1},
   adsurl = {http://adsabs.harvard.edu/abs/2012SoPh..276..337P},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{Parker1958,
   author = {{Parker}, E.~N.},
    title = "{Dynamics of the Interplanetary Gas and Magnetic Fields.}",
  journal = {Astrophysical Journal},
     year = 1958,
    month = nov,
   volume = 128,
    pages = {664},
      doi = {10.1086/146579},
   adsurl = {http://adsabs.harvard.edu/abs/1958ApJ...128..664P},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@BOOK{Parker1963,
   author = {{Parker}, E.~N.},
    title = "{Interplanetary dynamical processes.}",
 keywords = {SOLAR SYSTEM, SOLAR RADIATION, SUN: CORONA},
booktitle = {New York, Interscience Publishers, 1963.},
     year = 1963,
   adsurl = {http://adsabs.harvard.edu/abs/1963idp..book.....P},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{Parker2001,
   author = {{Parker}, E.~N.},
    title = "{A history of early work on the heliospheric magnetic field}",
  journal = {Journal of Geophysical Research},
 keywords = {History of Geophysics, Interplanetary Physics: Interplanetary magnetic fields, Interplanetary Physics: Solar wind plasma, Space Plasma Physics: Kinetic and MHD theory},
     year = 2001,
    month = aug,
   volume = 106,
    pages = {15797-15802},
      doi = {10.1029/2000JA000100},
   adsurl = {http://adsabs.harvard.edu/abs/2001JGR...10615797P},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{Ptuskin2001,
   author = {{Ptuskin}, V.~S.},
    title = "{Propagation, Confinement Models, and Large-Scale Dynamical Effects of Galactic Cosmic Rays}",
  journal = {Space Science Reviews},
     year = 2001,
    month = oct,
   volume = 99,
    pages = {281-293},
   adsurl = {http://adsabs.harvard.edu/abs/2001SSRv...99..281P},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{Reames2015,
   author = {{Reames}, D.~V.},
    title = "{What Are the Sources of Solar Energetic Particles? Element Abundances and Source Plasma Temperatures}",
  journal = {Space Science Reviews},
archivePrefix = "arXiv",
   eprint = {1510.03449},
 primaryClass = "astro-ph.SR",
 keywords = {Solar energetic particles, Shock waves, Coronal mass ejections, Solar flares, Solar system abundances},
     year = 2015,
    month = nov,
   volume = 194,
    pages = {303-327},
      doi = {10.1007/s11214-015-0210-7},
   adsurl = {http://adsabs.harvard.edu/abs/2015SSRv..194..303R},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{Richardson2008,
   author = {{Richardson}, J.~D. and {Kasper}, J.~C. and {Wang}, C. and {Belcher}, J.~W. and 
	{Lazarus}, A.~J.},
    title = "{Cool heliosheath plasma and deceleration of the upstream solar wind at the termination shock}",
  journal = {Nature},
     year = 2008,
    month = jul,
   volume = 454,
    pages = {63-66},
      doi = {10.1038/nature07024},
   adsurl = {http://adsabs.harvard.edu/abs/2008Natur.454...63R},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{Richardson2015,
  author={{Richardson}, J.~D. and {Decker}, R.~B.},
  title={Plasma and Flows in the Heliosheath},
  journal={Journal of Physics: Conference Series},
  volume={577},
  number={1},
  pages={012021},
  year={2015},
  abstract={Voyager 2 (V2) is now 20 AU deep into the heliosheath; if the heliosheath width were similar to that in the Voyager 1 (V1) direction, then V2 is 2/3 of the way to the heliopause. We present recent V2 observations, compare with observations from V1, and compare with model predictions. The speed of the flows observed by V2 in the heliosheath are, on average, remarkably constant at 150 km/s. The flow angle has changed dramatically, however, and is now over 60° from radial, with more of the turning occurring in the RT than RN planes. These flows are very different than those at V1, where the speed was always below 100 km/s and decreased across the heliosheath. Models predict VR at V2 well, but the the flow angle predictions differ from the observations. The average density and temperature of the plasma decreased by a factor of two in 2008, recovered in 2011, and have not changed significantly since 2011.}
}

@ARTICLE{Richardson2017,
   author = {{Richardson}, J.~D. and {Wang}, C. and {Liu}, Y.~D. and {{\v S}afr{\'a}nkov{\'a}}, J. and 
	{N{\v e}me{\v c}ek}, Z. and {Kurth}, W.~S.},
    title = "{Pressure Pulses at Voyager 2: Drivers of Interstellar Transients?}",
  journal = {Astrophysical Journal},
 keywords = {ISM: kinematics and dynamics, solar wind, Sun: coronal mass ejections: CMEs, Sun: heliosphere},
     year = 2017,
    month = jan,
   volume = 834,
      eid = {190},
    pages = {190},
      doi = {10.3847/1538-4357/834/2/190},
   adsurl = {http://adsabs.harvard.edu/abs/2017ApJ...834..190R},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{Stilwell1979,
   author = {{Stilwell}, D.~E. and {Davis}, W.~D. and {Joyce}, R.~M. and 
	{McDonald}, F.~B. and {Trainor}, J.~H. and {Althouse}, W.~E. and 
	{Cummings}, A.~C. and {Garrard}, T.~L. and {Stone}, E.~C. and 
	{Vogt}, R.~E.},
    title = "{The Voyager Cosmic Ray Experiment}",
  journal = {IEEE Transactions on Nuclear Science},
 keywords = {Cosmic Rays, Spaceborne Experiments, Voyager Project, Pulse Amplitude, Radiation Detectors, Spaceborne Telescopes, Spacecraft Instruments},
     year = 1979,
    month = feb,
   volume = 26,
    pages = {513-520},
      doi = {10.1109/TNS.1979.4329683},
   adsurl = {http://adsabs.harvard.edu/abs/1979ITNS...26..513S},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{Stone1977,
   author = {{Stone}, E.~C. and {Vogt}, R.~E. and {McDonald}, F.~B. and {Teegarden}, B.~J. and 
	{Trainor}, J.~H. and {Jokipii}, J.~R. and {Webber}, W.~R.},
    title = "{Cosmic ray investigation for the Voyager missions: Energetic particle studies in the outer heliosphere - and beyond}",
  journal = {Space Science Reviews},
 keywords = {Cosmic Rays, Electron Energy, Energy Spectra, Radiation Counters, Voyager Project, Chemical Composition, Galactic Radiation, Satellite Observation},
     year = 1977,
    month = dec,
   volume = 21,
    pages = {355-376},
      doi = {10.1007/BF00211546},
   adsurl = {http://adsabs.harvard.edu/abs/1977SSRv...21..355S},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{Stone2005,
   author = {{Stone}, E.~C. and {Cummings}, A.~C. and {McDonald}, F.~B. and 
	{Heikkila}, B.~C. and {Lal}, N. and {Webber}, W.~R.},
    title = "{Voyager 1 Explores the Termination Shock Region and the Heliosheath Beyond}",
  journal = {Science},
     year = 2005,
    month = sep,
   volume = 309,
    pages = {2017-2020},
      doi = {10.1126/science.1117684},
   adsurl = {http://adsabs.harvard.edu/abs/2005Sci...309.2017S},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{Stone2008,
   author = {{Stone}, E.~C. and {Cummings}, A.~C. and {McDonald}, F.~B. and 
	{Heikkila}, B.~C. and {Lal}, N. and {Webber}, W.~R.},
    title = "{An asymmetric solar wind termination shock}",
  journal = {Nature},
     year = 2008,
    month = jul,
   volume = 454,
    pages = {71-74},
      doi = {10.1038/nature07022},
   adsurl = {http://adsabs.harvard.edu/abs/2008Natur.454...71S},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{Stone2013,
   author = {{Stone}, E.~C. and {Cummings}, A.~C. and {McDonald}, F.~B. and 
	{Heikkila}, B.~C. and {Lal}, N. and {Webber}, W.~R.},
    title = "{Voyager 1 Observes Low-Energy Galactic Cosmic Rays in a Region Depleted of Heliospheric Ions}",
  journal = {Science},
     year = 2013,
    month = jul,
   volume = 341,
    pages = {150-153},
      doi = {10.1126/science.1236408},
   adsurl = {http://adsabs.harvard.edu/abs/2013Sci...341..150S},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{Stone2017,
      author         = "Stone, E. C. and Cummings, A. C. and Heikkila, B. C.
                        and Lal, N. and Webber, W. R.",
      title          = "{The Anisotropy of Anomalous Cosmic Rays Observed by
                        Voyager 2 in the Heliosheath}",
      booktitle      = "{Contributions to the 35th International Cosmic
                        Ray Conference (ICRC 2017)}",
      journal        = "PoS",
      volume         = "ICRC2017",
      year           = "2018",
      pages          = "057",
      doi            = "10.22323/1.301.0057"
}

@ARTICLE{Sullivan1971,
   author = {{Sullivan}, J.~D.},
    title = "{Geometrical factor and directional response of single and multi-element particle telescopes}",
  journal = {Nuclear Instruments and Methods},
     year = 1971,
   volume = 95,
    pages = {5},
      doi = {10.1016/0029-554X(71)90033-4},
   adsurl = {http://adsabs.harvard.edu/abs/1971NucIM..95....5S},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{Nes1985,
   author = {{Van Nes}, P. and {Roelof}, E.~C. and {Reinhard}, R. and {Sanderson}, T.~R. and 
	{Wenzel}, K.-P.},
    title = "{A major shock-associated energetic storm particle event wherein the shock plays a minor role}",
  journal = {Journal of Geophysical Research},
 keywords = {Interplanetary Magnetic Fields, Particle Acceleration, Shock Waves, Solar Flares, Solar Wind, Adiabatic Conditions, Drift Rate, International Sun Earth Explorer 3, Mean Free Path, Particle Flux Density, Shock Discontinuity},
     year = 1985,
    month = may,
   volume = 90,
    pages = {3981-3994},
      doi = {10.1029/JA090iA05p03981},
   adsurl = {http://adsabs.harvard.edu/abs/1985JGR....90.3981V},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{Roelof2013,
   author = {{Roelof}, E.~C. and {Decker}, R.~B. and {Hill}, M.~E. and {Krimigis}, S.~M.
	},
    title = "{Galactic Cosmic Ray Pitch-Angle Anisotropies Beyond the Edge of the Hot Heliosheath: Voyager-1 Observations and Interpretations}",
  journal = {AGU Fall Meeting Abstracts},
 keywords = {2104 INTERPLANETARY PHYSICS Cosmic rays, 2124 INTERPLANETARY PHYSICS Heliopause and solar wind termination, 2126 INTERPLANETARY PHYSICS Heliosphere/interstellar medium interactions},
     year = 2013,
    month = dec,
      eid = {SH11B-1978},
    pages = {SH11B-1978},
   adsurl = {http://adsabs.harvard.edu/abs/2013AGUFMSH11B1978R},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{Rosenvinge2007,
   author = {{von Rosenvinge}, T.~T. and {Reames}, D.~V. and {Baker}, R. and 
	{Hawk}, J. and {Nolan}, J.~T. and {Ryan}, L. and {Shuman}, S. and 
	{Wortman}, K.~A. and {Mewaldt}, R.~A. and {Cummings}, A.~C. and 
	{Cook}, W.~R. and {Labrador}, A.~W. and {Leske}, R.~A. and {Wiedenbeck}, M.~E.
	},
    title = "{The High Energy Telescope for STEREO}",
  journal = {Space Science Reviews},
     year = 2008,
    month = apr,
   volume = 136,
    pages = {391-435},
      doi = {10.1007/s11214-007-9300-5},
   adsurl = {http://adsabs.harvard.edu/abs/2008SSRv..136..391V},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{Washimi2011,
   author = {{Washimi}, H. and {Zank}, G.~P. and {Hu}, Q. and {Tanaka}, T. and 
	{Munakata}, K. and {Shinagawa}, H.},
    title = "{Realistic and time-varying outer heliospheric modelling}",
  journal = {Monthly Notices of the Royal Astronomical Society},
 keywords = {MHD, shock waves, Sun: heliosphere, solar wind},
     year = 2011,
    month = sep,
   volume = 416,
    pages = {1475-1485},
      doi = {10.1111/j.1365-2966.2011.19144.x},
   adsurl = {http://adsabs.harvard.edu/abs/2011MNRAS.416.1475W},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{Washimi2017,
   author = {{Washimi}, H. and {Tanaka}, T. and {Zank}, G.~P.},
    title = "{Time-varying Heliospheric Distance to the Heliopause}",
  journal = {Astrophysical Journal Letters},
 keywords = {ISM: magnetic fields, magnetohydrodynamics: MHD, solar wind, Sun: heliosphere},
     year = 2017,
    month = sep,
   volume = 846,
      eid = {L9},
    pages = {L9},
      doi = {10.3847/2041-8213/aa8556},
   adsurl = {http://adsabs.harvard.edu/abs/2017ApJ...846L...9W},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{Webber2013,
   author = {{Webber}, W.~R. and {McDonald}, F.~B.},
    title = "{Recent Voyager 1 data indicate that on 25 August 2012 at a distance of 121.7 AU from the Sun, sudden and unprecedented intensity changes were observed in anomalous and galactic cosmic rays}",
  journal = {Geophysical Research Letters},
 keywords = {cosmic rays, heliosphere},
     year = 2013,
    month = may,
   volume = 40,
    pages = {1665-1668},
      doi = {10.1002/grl.50383},
   adsurl = {http://adsabs.harvard.edu/abs/2013GeoRL..40.1665W},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{Webber2018,
   author = {{Webber}, W.~R. and {Villa}, T.~L.},
    title = "{A Comparison of the Galactic Cosmic Ray Electron and Proton Intensities From 1 MeV/nuc to 1 TeV/nuc Using Voyager and Higher Energy Magnetic Spectrometer Measurements Are There Differences in the Source Spectra of These Particles?}",
  journal = {ArXiv e-prints},
archivePrefix = "arXiv",
   eprint = {1806.02808},
 primaryClass = "physics.space-ph",
 keywords = {Physics - Space Physics, Astrophysics - High Energy Astrophysical Phenomena},
     year = 2018,
    month = jun,
   adsurl = {http://adsabs.harvard.edu/abs/2018arXiv180602808W},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@article{Wiedenbeck2017,
      author         = "Wiedenbeck, M. E. and others",
      title          = "{Capabilities and Performance of the High-Energy
                        Energetic-Particles Instrument for the Parker Solar Probe
                        Mission}",
      booktitle      = "{Contributions to the 35th International Cosmic
                        Ray Conference (ICRC 2017)}",
      journal        = "PoS",
      volume         = "ICRC2017",
      year           = "2018",
      pages          = "016",
      doi            = "10.22323/1.301.0016",
      SLACcitation   = "\%\%CITATION = POSCI,ICRC2017,016;\%\%"
}

@ARTICLE{Zank2003,
   author = {{Zank}, G.~P. and {M{\"u}ller}, H.-R.},
    title = "{The dynamical heliosphere}",
  journal = {Journal of Geophysical Research (Space Physics)},
 keywords = {Interplanetary Physics: Heliopause and solar wind termination, Interplanetary Physics: Solar cycle variations (7536), Interplanetary Physics: Interplanetary shocks, Interplanetary Physics: Interstellar gas, heliospheric structure, interstellar medium, heliospheric boundaries, large-scale solar wind},
     year = 2003,
    month = jun,
   volume = 108,
      eid = {1240},
    pages = {1240},
      doi = {10.1029/2002JA009689},
   adsurl = {http://adsabs.harvard.edu/abs/2003JGRA..108.1240Z},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{Zhao2018,
   author = {{Zhao}, L.-L. and {Adhikari}, L. and {Zank}, G.~P. and {Hu}, Q. and 
	{Feng}, X.~S.},
    title = "{Influence of the Solar Cycle on Turbulence Properties and Cosmic-Ray Diffusion}",
  journal = {Astrophysical Journal},
 keywords = {cosmic rays, solar wind, Sun: activity, turbulence },
     year = 2018,
    month = apr,
   volume = 856,
      eid = {94},
    pages = {94},
      doi = {10.3847/1538-4357/aab362},
   adsurl = {http://adsabs.harvard.edu/abs/2018ApJ...856...94Z},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{Zirnstein2016,
   author = {{Zirnstein}, E.~J. and {Heerikhuisen}, J. and {Funsten}, H.~O. and 
	{Livadiotis}, G. and {McComas}, D.~J. and {Pogorelov}, N.~V.
	},
    title = "{Local Interstellar Magnetic Field Determined from the Interstellar Boundary Explorer Ribbon}",
  journal = {Astrophysical Journal Letters},
 keywords = {ISM: atoms, ISM: magnetic fields, solar wind, Sun: heliosphere },
     year = 2016,
    month = feb,
   volume = 818,
      eid = {L18},
    pages = {L18},
      doi = {10.3847/2041-8205/818/1/L18},
   adsurl = {http://adsabs.harvard.edu/abs/2016ApJ...818L..18Z},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}