@article{ZVMMF_1987_27_12_a4,
     author = {S. I. Sergeev},
     title = {A new lower bound for the quadratic assignment problem},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1802--1811},
     year = {1987},
     volume = {27},
     number = {12},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1987_27_12_a4/}
}