@article{DA_1998_5_1_a2,
     author = {E. N. Goncharov},
     title = {The branch and bound method for the simplest two-level problem of facility location},
     journal = {Diskretnyj analiz i issledovanie operacij},
     pages = {19--39},
     publisher = {mathdoc},
     volume = {5},
     number = {1},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DA_1998_5_1_a2/}
}