1. Hill, M.E., Hamilton, D.C., Decker, R.B., and Krimigis, S.M., Sustained Energetic Particle Intensity Enhancements at Voyager 1 Beginning in 2002, Proc. 28th ICRC, 2003, p. 3893.
2. Zeldovich, M.A., Dmitriev, A.V., Kecskemety, K., et al., On the Possible Detection of the Outer Heliosphere Boundary Signatures in Accelerated Ions Seen by Voyager 1 Beginning from July 2002, Proc. 28th ICRC, 2003, p. 3785.
3. Zeldovich, M.A., Veselovsky, I.S., Dmitriev, A.V., and Logachev, Yu.I., Possible Discovery of Indications of Approach of the Voyager 1 Spacecraft to the Heliosphere Boundaries, Astron. Vestn., 2003, vol. 37, no. 5, p. 459.
4. Veselovsky, I.S., Logachev, Yu.I., Kecskemety, K., et al., On the Possible Acceleration and Temporary Confinement of Energetic Ions in the Distant Heliosphere, Adv. Space Res., 2006, vol. 37, p. 1433.
5. Veselovsky, I.S., Zeldovich, M.A., Kecskemety, K., and Logachev, Yu.I., Fluxes of Protons with Energies from Fractions to Tens of MeV in the Distant Heliosphere and near Its Boundaries, Izv. Ros. Akad. Nauk, Ser. Fiz., 2005, vol. 69, no. 6, p. 842.