%0 Journal Article %A I. Yu. Mogilnykh %T On nonexistence of some perfect 2-colorings of Johnson graphs %J Diskretnyj analiz i issledovanie operacij %D 2009 %P 52-68 %V 16 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DA_2009_16_5_a5/ %G ru %F DA_2009_16_5_a5