@article{DAN_1978_242_5_a10,
     author = {M. M. Khrustalev},
     title = {Necessary and sufficient optimality conditions in the form of {Bellman's} equation},
     journal = {Doklady Akademii Nauk},
     pages = {1023--1026},
     publisher = {mathdoc},
     volume = {242},
     number = {5},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1978_242_5_a10/}
}