1. Gabbay, D. Reactive Beth Tableaux for modal logics. April 2009, to appear in Annals of Mathematics in Artificial Intelligence 2011.
2. Gabbay, D. (2008). Reactive Kripke semantics and arc accessibility. In A. Avron, N. Dershowitz, & A. Rabinovich (Eds.), Pillars of computer science: Essays dedicated to Boris (Boaz) Trakhtenbrot on the occasion of his 85th birthday (LNCS 4800, pp. 292–341). Berlin: Springer.
3. Gabbay D., Marcelino S. (2009) Modal logics of reactive frames. Studia Logica 92: 403–444
4. Maksimova L. L. (1977) Craig’s Theorem in superintuitionsitic logic and amalgamable varieties of pseudo-Boolean algebras. Algebra and Logic 16: 427–455