@article{DA_2004_11_3_a4,
     author = {A. V. Pyatkin},
     title = {On the $(1,1)$-coloring of incidentors of multigraphs of degree 4},
     journal = {Diskretnyj analiz i issledovanie operacij},
     pages = {59--62},
     publisher = {mathdoc},
     volume = {11},
     number = {3},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DA_2004_11_3_a4/}
}