1. L. N. Sevrin and L. M. Martynov, ?Attainability and solvability for classes of algebras,? in: Colloq. Math. János Bolyai (39 Semigroups, Szeged, Hungary, 1981), North-Holland, Amsterdam (1985), pp. 397?459.
2. L. M. Martynov, ?On attainability and solvability for varieties of modules,? in: Studies in Algebraic Systems [in Russian], Sverdlovsk (1984), pp. 56?74.
3. L. M. Martynov, ?On solvability spectra for varieties of associative algebras,? Algebra Logika,23, No. 5, 483?492 (1984).
4. L. M. Martynov, ?Attainable varieties of associative algebras over Dedekind rings,? Izv. Vyssh. Uchebn. Zaved., Mat., No. 11, 75?81 (1985).
5. Yu. A. Bakhturin, Identities in Lie Algebras [in Russian], Nauka, Moscow (1985).