%0 Journal Article %A L. A. Bokut' %A G. P. Kykin %T Undecidable algorithmic problems for semigroups, groups and rings %J Itogi Nauki i Tekhniki. Seriya Algebra. Geometriya. Topologiya %D 1987 %P 3-66 %V 25 %I mathdoc %U http://geodesic.mathdoc.fr/item/INTA_1987_25_a0/ %G ru %F INTA_1987_25_a0