%0 Journal Article %A A. F. Malov %A V. A. Suzdalev %A A. I. Zaboev %A E. P. Fedoseev %T Nonparaxial focusing of charged particle beams in mid-plane of axially symmetric magnetic field at arbitrary range of particle mass change %J Doklady Akademii Nauk %D 1973 %P 556-559 %V 213 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1973_213_3_a16/ %G ru %F DAN_1973_213_3_a16