@article{DA_2014_21_4_a6,
     author = {A. A. Mel'nikov},
     title = {Computational complexity of the discrete competitive facility location problem},
     journal = {Diskretnyj analiz i issledovanie operacij},
     pages = {62--79},
     year = {2014},
     volume = {21},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DA_2014_21_4_a6/}
}