Extreme values of solar proton penetration boundaries in the Earths magnetosphere

by Myagkova, Irina N., Panasyuk, Mikhail I., Kudela, Karel, Yushkov, Boris Yu, Bogomolov, Andrei V.
Source: 1. Proceedings of the 21st European cosmic ray symposium 1. Košice : Ústav experimentálnej fyziky Slovenskej akadémie vied, 2009 1. 9788096806058 1. S. 201-204