%0 Journal Article %A V. M. Kopytov %T Solvability of the occurrence problem in finitely generated %J Algebra i logika %D 1971 %P 169-182 %V 10 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/AL_1971_10_2_a2/ %G ru %F AL_1971_10_2_a2