@article{DE_1994_30_5_a18,
     author = {G. V. Demidenko},
     title = {A class of integral operators and applications to quasi-elliptic equations. {I}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {889--898},
     publisher = {mathdoc},
     volume = {30},
     number = {5},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1994_30_5_a18/}
}