@article{INTV_1979_16_a1,
     author = {V. K. Leont'ev},
     title = {Discrete extremal problems},
     journal = {Itogi nauki i tehniki. Seri\^a, Teori\^a vero\^atnostej. Matemati\v{c}eska\^a statistika. Teoreti\v{c}eska\^a kibernetika},
     pages = {39--101},
     publisher = {mathdoc},
     volume = {16},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTV_1979_16_a1/}
}