%0 Journal Article %A Sergei V. Smolin %T Nonlinear effect for anisotropy of charged particle pitch angle distribution at geostationary orbit %J Žurnal Sibirskogo federalʹnogo universiteta. Matematika i fizika %D 2024 %P 644-653 %V 17 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/JSFU_2024_17_5_a9/ %G en %F JSFU_2024_17_5_a9