%0 Journal Article %A V. N. Funtakov %T Eigenfunction expansion of second order nonselfadjoint differential equations %J Differencialʹnye uravneniâ %D 1970 %P 2011-2020 %V 6 %N 11 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1970_6_11_a9/ %G ru %F DE_1970_6_11_a9