@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/}
}