%0 Journal Article %A S. S. Marchenkov %T Precomplete classes in the Cartesian products of $P_2$ and $P_3$ %J Diskretnaya Matematika %D 1994 %P 21-42 %V 6 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DM_1994_6_2_a1/ %G ru %F DM_1994_6_2_a1