1. Antonakos, E.: Justified knowledge is sufficient. Technical Report TR-2006004, CUNY Ph.D. Program in Computer Science (2006)
2. Lecture Notes in Computer Science;E. Antonakos,2007
3. Artemov, S.N.: Operational modal logic. Technical Report MSI 95-29, Cornell University (1995)
4. Artemov, S.N.: Explicit provability and constructive semantics. Bull. Symb. Log. 7(1), 1–36 (2001)
5. Artemov, S.N., Beklemishev, L.D.: Provability logic. In: Gabbay, D., Guenthner, F. (eds.) Handbook of Philosophical Logic, 2nd edn., vol. 13, pp. 229–403. Springer, Berlin (2004)