@article{DE_1982_18_1_a6,
     author = {A. P. Makhmudov},
     title = {On the completeness of eigenelements of some nonlinear equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {64--72},
     publisher = {mathdoc},
     volume = {18},
     number = {1},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1982_18_1_a6/}
}