@article{ZVMMF_1973_13_1_a2,
     author = {B. T. Polyak and N. V. Tret'yakov},
     title = {A method of penalty estimates for conditional extremum problems},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {34--46},
     publisher = {mathdoc},
     volume = {13},
     number = {1},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1973_13_1_a2/}
}