@article{ZVMMF_1978_18_2_a5,
     author = {A. I. Samylovskii and B. G. Sushkov},
     title = {Construction of the characteristic function of a non-convex set and the related problem of quadratic integer-valued programming},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {322--337},
     publisher = {mathdoc},
     volume = {18},
     number = {2},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1978_18_2_a5/}
}