1. Ahluwalia, H.S. Three activity cycle periodicity in galactic cosmic rays, in: Proceedings of the 25th International Cosmic Ray Conference, Durban, vol. 2, pp. 109–112, 1997.
2. Shortwave, longwave and net cloud-radiative forcing as determined from NIMBUS-7 observations;Ardanuy;J. Geophys. Res.,1991
3. Burger, R.A., Potgieter, M.S. The effect of large Heliospheric current sheet tilt angles in numerical modulation models: a theoretical assessment, in: Proceedings of the 26th International Cosmic Ray Conference, Salt Lake City, vol. 7, pp. 13–16, 1999.
4. Dorman, L.I. To the theory of cosmic ray modulation by solar wind, in: Proceedings of the 6th International Cosmic Ray Conference, Moscow, vol. 4, pp. 328–334, 1959.
5. Dorman, L.I. Galactic and solar cosmic rays in interplanetary space, in: Proceedings of the Ninth International Cosmic Ray Conference, London, vol. 1, pp. 292–295, 1965.