@article{DE_1970_6_2_a16,
     author = {N. N. Petrov},
     title = {The continuity of the generalized {Bellman} function},
     journal = {Differencialʹnye uravneni\^a},
     pages = {373--374},
     publisher = {mathdoc},
     volume = {6},
     number = {2},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1970_6_2_a16/}
}