@article{DA_2015_22_2_a6,
     author = {R. Yu. Simanchev and I. V. Urazova},
     title = {On the faces of the graph approximation problem polytope},
     journal = {Diskretnyj analiz i issledovanie operacij},
     pages = {86--101},
     publisher = {mathdoc},
     volume = {22},
     number = {2},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DA_2015_22_2_a6/}
}