%0 Journal Article %A G. T. Kozlov %T Unsolvability of the elementary theory of lattices of subgroups of %J Algebra i logika %D 1970 %P 167-171 %V 9 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/AL_1970_9_2_a3/ %G ru %F AL_1970_9_2_a3