@article{DAN_1975_224_6_a9,
     author = {G. I. Shishkin},
     title = {On a problem of {Stefan} type with discontinuous moving boundary},
     journal = {Doklady Akademii Nauk},
     pages = {1276--1278},
     year = {1975},
     volume = {224},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1975_224_6_a9/}
}