@article{DA_1997_4_1_a4,
     author = {Yu. V. Shamardin},
     title = {A~model for the estimation of the opposition of two coalitions},
     journal = {Diskretnyj analiz i issledovanie operacij},
     pages = {54--64},
     publisher = {mathdoc},
     volume = {4},
     number = {1},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DA_1997_4_1_a4/}
}