%0 Journal Article %A A. N. Degtev %T Decidability of the $\forall \exists $-theory of a certain %J Algebra i logika %D 1978 %P 134-143 %V 17 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/AL_1978_17_2_a1/ %G ru %F AL_1978_17_2_a1