@article{DE_1992_28_1_a17,
     author = {B. Yu. Sternin and V. E. Shatalov},
     title = {On the problem of the continuation of solutions for elliptic equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {152--162},
     publisher = {mathdoc},
     volume = {28},
     number = {1},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1992_28_1_a17/}
}