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@article{DE_1970_6_11_a9, author = {V. N. Funtakov}, title = {Eigenfunction expansion of second order nonselfadjoint differential equations}, journal = {Differencialʹnye uravneni\^a}, pages = {2011--2020}, publisher = {mathdoc}, volume = {6}, number = {11}, year = {1970}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1970_6_11_a9/} }
V. N. Funtakov. Eigenfunction expansion of second order nonselfadjoint differential equations. Differencialʹnye uravneniâ, Tome 6 (1970) no. 11, pp. 2011-2020. http://geodesic.mathdoc.fr/item/DE_1970_6_11_a9/