The decision problem for the logic of predicates and of operations Yu. Sh. Gurevich OriginalPaper Pages: 160 - 174
Coincidence of smiley and kleinfeld radicals in alternative rings K. A. Zhevlakov OriginalPaper Pages: 175 - 181
Elementary theory of abelian groups without torsion, with a predicate selecting a subgroup G. T. KozlovA. I. Kokorin OriginalPaper Pages: 182 - 190