@article{DA_2000_7_4_a3,
     author = {V. G. Vizing and L. S. Mel'nikov and A. V. Pyatkin},
     title = {On the $(k,l)$-coloring of incidentors},
     journal = {Diskretnyj analiz i issledovanie operacij},
     pages = {29--37},
     publisher = {mathdoc},
     volume = {7},
     number = {4},
     year = {2000},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DA_2000_7_4_a3/}
}