1. P.R. Gazis, A. Barnes, and A.J. Lazarus, Intercomparison of Voyager and Pioneer plasma observations, in: Proceeding of the Sixth International Solar Wind Conference. NCAR Technical Note NCAR/TN-306+Proc, ed. V.J. Pizzo, T.E. Holzer, and D.G. Sime, 1988, p. 563.
2. Pioneer and Voyager Observations of the solar wind at large heliocentric distances and latitudes;Gazis;Geophys. Res. Lett.,1989
3. Fields and plasma in the outer solar system;Smith;Space Sci. Revs.,1979
4. P.R. Gazis and A.J. Lazarus, The radial evolution of the solar wind, 1–10 AU, in: Solar Wind Five. NASA Conference Publication 2280, ed. M. Neugebauer, 1983, p. 509.
5. E.J. Smith and A. Barnes, Spatial dependences in the solar wind, in: Solar Wind Five. NASA Conference Publication 2280, ed. M. Neugebauer, 1983, p. 521.