@article{ZVMMF_1976_16_3_a4,
     author = {E. S. Levitin},
     title = {Estimates for stability with respect to the solution in an unconditional optimization problem},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {585--596},
     publisher = {mathdoc},
     volume = {16},
     number = {3},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1976_16_3_a4/}
}