%0 Journal Article %A V. G. Marikhin %T Quasi-St\"ackel systems and two-dimensional Schr\"odinger equations in an~electromagnetic field %J Teoretičeskaâ i matematičeskaâ fizika %D 2013 %P 83-92 %V 177 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_2013_177_1_a2/ %G ru %F TMF_2013_177_1_a2