Article

Chagrov, A.V. and Zakharyaschev, Michael (1995) On the independent axiomatizability of modal and intermediate logics. Journal of Logic and Computation 5 (3), pp. 287-302. ISSN 0955-792X.

Chagrov, A.V. and Zakharyaschev, M. (1993) The undecidability of the disjunction property of propositional logics and other related problems. The journal of Symbolic Logic 58 (3), pp. 967-1002. ISSN 0022-4812.

Chagrov, A.V. and Zakharyaschev, Michael (1992) Modal companions of intermediate propositional logics. Studia Logica 51 (1), pp. 49-82. ISSN 0039-3215.

Chagrov, A.V. and Zakharyaschev, Michael (1991) The disjunction property of intermediate propositional logics. Studia Logica 50 (2), pp. 189-216. ISSN 0039-3215.

Book

Chagrov, A.V. and Zakharyaschev, Michael (1997) Modal logic. Oxford logic guides 35. Oxford, UK: Oxford University Press. ISBN 9780198537793.