%0 Journal Article %A O. E. Shishanin %T Modification of Hill's equation for the storage rings simplified models %J Vestnik Sankt-Peterburgskogo universiteta. Prikladnaâ matematika, informatika, processy upravleniâ %D 2012 %P 60-65 %N 2 %U http://geodesic.mathdoc.fr/item/VSPUI_2012_2_a6/ %G ru %F VSPUI_2012_2_a6