@article{DE_1988_24_7_a8,
     author = {V. V. Drozdov and S. A. Galkin},
     title = {An iterative method for solving an elliptic problem with a free boundary},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1171--1175},
     publisher = {mathdoc},
     volume = {24},
     number = {7},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1988_24_7_a8/}
}