@article{DAN_1986_288_5_a15,
     author = {E. V. Radkevich},
     title = {On the solvability of general nonstationary problems with a free boundary},
     journal = {Doklady Akademii Nauk},
     pages = {1094--1099},
     publisher = {mathdoc},
     volume = {288},
     number = {5},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1986_288_5_a15/}
}