%0 Journal Article %A I. P. Bestsennyi %T Quasi-identities of finite unary algebras %J Algebra i logika %D 1989 %P 493-512 %V 28 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/AL_1989_28_5_a1/ %G ru %F AL_1989_28_5_a1