@article{ZVMMF_1994_34_8_a1,
     author = {V. V. Voloshinov and G. G. Kotkin and A. M. Tkach},
     title = {Approximation methods for problems of nonlinear programming},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1133--1149},
     year = {1994},
     volume = {34},
     number = {8},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1994_34_8_a1/}
}