@article{RM_1997_52_6_a10,
     author = {Yu. V. Egorov and V. A. Kondrat'ev},
     title = {On a~problem of {O.\,A.~Oleinik}},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {1296--1297},
     publisher = {mathdoc},
     volume = {52},
     number = {6},
     year = {1997},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1997_52_6_a10/}
}