@article{DAN_1961_141_3_a13,
     author = {A. F. Filippov},
     title = {Conditions for the existence of a solution of a quasi-linear parabolic equation},
     journal = {Doklady Akademii Nauk},
     pages = {568--570},
     publisher = {mathdoc},
     volume = {141},
     number = {3},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_141_3_a13/}
}