%0 Journal Article %A M. Sh. Ryvkin %T Neutral system of two charged interacting particles in a magnetic field %J Doklady Akademii Nauk %D 1975 %P 67-69 %V 221 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1975_221_1_a16/ %G ru %F DAN_1975_221_1_a16