@article{DA_2009_16_2_a1,
     author = {O. V. Borodin and A. O. Ivanova},
     title = {Near-proper vertex 2-colorings of sparse graphs},
     journal = {Diskretnyj analiz i issledovanie operacij},
     pages = {16--20},
     publisher = {mathdoc},
     volume = {16},
     number = {2},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DA_2009_16_2_a1/}
}