1. M. A. Abashidze, ?Varieties of Magari algebras,? in: Logico-Methodological Research [in Russian], Tbilisi (1983), pp. 121?134.
2. I. Abragan, ?Minimal sets of generators in unary algebras,? Mat. Cas.,25, No. 4, 305?317 (1975).
3. L. A. Al'shanskii, ?Linear automata and triangular products,? Latv. Mat. Ezhegod. (Riga), No. 30, 98?109 (1986).
4. V. S. Anashin, ?Solvable groups with operators and commutative rings having transitive polynomials,? Algebra Logika,21, No. 6, 627?646 (1982).
5. V. A. Artamonov, ?Universal algebras,? Itogi Nauki Tekhn., Ser. Algebra, Topologiya, Geometriya,14, 191?248 (1976).