@article{ZVMMF_1985_25_1_a8,
     author = {Yu. I. Khudak},
     title = {The minimum of the mean value of work decrease functions for step systems},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {88--95},
     publisher = {mathdoc},
     volume = {25},
     number = {1},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1985_25_1_a8/}
}