1. Foundations of Databases;Abiteboul,1995
2. Modal languages and bounded fragments of predicate logic;Andreka;J. Philos. Logic,1998
3. Finite Transition Systems, Semantics of communicating systems, C.A.R. Hoare International series;Arnold,1994
4. Rudiments of μ-calculus;Arnold,2001
5. Fixpoint alternation: arithmetic, transition systems, and the binary tree;Bradfield;in: Theoretical Informatics and Applications,1999