1. Baltag, A. (1999). A logic of epistemic actions, ms. Amsterdam: CWI.
2. Buchholz, W. (1995). Proof-theoretic analysis of termination proofs. Annals of Pure and Applied Logic, 75, 57–65.
3. Dershowitz, N. (1982). Orderings for term-rewriting systems. Theoretical Computer Science, 17, 279–301.
4. Fagin, R., Halpern, J. Y., Moses, Y., & Vardi, M. Y. (1995). Reasoning about knowledge. Cambridge: MIT.
5. Gerbrandy, J. (1999a). Dynamic epistemic logic. In L. S. Moss, et al. (Eds.), Logic, language, and information (Vol. 2). Stanford: CSLI Publications, Stanford University.