Oscillations of Galactic Cosmic Rays and Solar Indexes prior to the Arrival of Relativistic solar Protons

L.I. Miroshnichenko, J.A. Pérez-Peraza, V.M. Velasco-Herrera, J. Zapotitla, E.V. Vashenyuk.
Geomagnetism and Aeronomy, Vol. 52 No. 5, 547-560, 2012 (version en ingles); Vol. 52 No. 5, 579-593, 2012 (Versión Rusa).