%0 Journal Article %A S. A. Chikhachev %T An example of a theory without weakly %J Algebra i logika %D 1984 %P 336-340 %V 23 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/AL_1984_23_3_a6/ %G ru %F AL_1984_23_3_a6