@article{DE_1987_23_10_a19,
     author = {B. A. Iskenderov and E. Kh. Eivazov and A. N. \`Efendieva},
     title = {Radiation principles for a higher-order elliptic equation in a tube domain},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1804--1807},
     publisher = {mathdoc},
     volume = {23},
     number = {10},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1987_23_10_a19/}
}