1. Anderson, A.R. (1958). A Reduction of Deontic Logic to Alethic Modal Logic. Mind 67, 1958, pp. 100–103.
2. Apt K.R., Blair, H.A., and Walker A. (1988) Towards a Theory of Declarative Knowledge. In: Foundations of Deductive Databases and Logic Programming (J. Minker, ed.), Morgan Kaufmann, Los Altos, CA, 1988, pp. 89–148.
3. Baltag, A., Moss, L.S., and Solecki, S. (1998) The Logic of Public Announcements, Common Knowledge, and Private Suspicions. In: Theoretical Aspects of Rationality and Knowledge (Proc. TARK 1998) (I. Gilboa, ed.), Morgan Kaufmann, San Francisco, 1998, pp. 43–56.
4. van Benthem, J. (1995) Temporal Logic. In: Handbook of Logic in Artificial Intelligence and Logic Programming, Vol. 4: Epistemic and Temporal Reasoning (D.M. Gabbay, C.J. Hogger & J.A. Robinson, eds.), Clarendon Press, Oxford, 1995, pp.241–350.
5. Castelfranchi, C. and Falcone, R. (1998) Principles of Trust for MAS: Cognitive Anatomy, Social Importance, and Quantification. In: Proc. 3rd Int. Conf. on Multi-Agent Systems (ICMAS’98) (Y. Demazeau, ed.), IEEE, Los Alamitos, CA, 1998, pp. 72–79.