@article{ZVMMF_2002_42_8_a6,
     author = {A. A. Tsygankov},
     title = {On sufficient optimality conditions for a mathematical programming problem},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1151--1157},
     year = {2002},
     volume = {42},
     number = {8},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_2002_42_8_a6/}
}