%0 Journal Article %A R. G. Nigmatullin %T Complexity of approximate solution of combinatorial problems %J Doklady Akademii Nauk %D 1975 %P 289-292 %V 224 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1975_224_2_a8/ %G ru %F DAN_1975_224_2_a8