%0 Journal Article %A F. G. Maksudov %T Expansion in eigenfunctions of non-selfadjoint, singular second-order differential operators depending on a parameter %J Doklady Akademii Nauk %D 1963 %P 1001-1004 %V 153 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1963_153_5_a3/ %G ru %F DAN_1963_153_5_a3