@article{DE_1979_15_9_a15,
     author = {S. A. Voitsekhovskii and V. L. Makarov and V. G. Prikazchikov},
     title = {A variant of the method of fictitious domains in eigenvalue problems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1676--1680},
     publisher = {mathdoc},
     volume = {15},
     number = {9},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1979_15_9_a15/}
}