@article{DE_1983_19_4_a8,
     author = {N. L. Gol'dman},
     title = {A class of nonlinear inverse problems with an unknown boundary},
     journal = {Differencialʹnye uravneni\^a},
     pages = {608--617},
     publisher = {mathdoc},
     volume = {19},
     number = {4},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1983_19_4_a8/}
}