Aperiodic sequences and growth functions of algebras A. T. Kolotov OriginalPaper 01 March 1981 Pages: 95 - 105
Strong equivalence on an intuitionistic Kripke model and assertorically equivolumetric logics A. Yu. Muravitskii OriginalPaper 01 March 1981 Pages: 112 - 123
Finite simple groups with 3-constrained 3-local subgroups N. D. Podufalov OriginalPaper 01 March 1981 Pages: 124 - 138
Unsolvability of the universal theory of finite groups A. M. Slobodskoi OriginalPaper 01 March 1981 Pages: 139 - 156