@article{ZVMMF_1990_30_1_a4,
     author = {Yu. G. Evtushenko and V. G. Zhadan},
     title = {Exact auxiliary functions in optimization problems},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {43--57},
     publisher = {mathdoc},
     volume = {30},
     number = {1},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1990_30_1_a4/}
}