@article{DE_1996_32_3_a20,
     author = {Yu. A. Konyaev},
     title = {Initial value and boundary value problems with singularities},
     journal = {Differencialʹnye uravneni\^a},
     pages = {419--421},
     publisher = {mathdoc},
     volume = {32},
     number = {3},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1996_32_3_a20/}
}