%0 Journal Article %A A. D. Korshunov %T Some unsolved problems in discrete mathematics and mathematical cybernetics %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 2009 %P 787-803 %V 64 %N 5 %U http://geodesic.mathdoc.fr/item/RM_2009_64_5_a0/ %G en %F RM_2009_64_5_a0