@article{DAN_1980_252_1_a19,
     author = {V. L. Kulagin},
     title = {A parabolic problem with an unknown boundary},
     journal = {Doklady Akademii Nauk},
     pages = {76--79},
     publisher = {mathdoc},
     volume = {252},
     number = {1},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1980_252_1_a19/}
}