1. Åqvist, L.: 1975, A New Approach to the Logical Theory of Interrogatives, TBL Verlag Gunter Barr, Tubingen, Germany.
2. Aumann, R. J.: 1976, Agreeing to disagree, Annals of Statistics 4(6), 1236–1239.
3. Austin, J.: 1962, How to do Things with Words, Oxford University Press, London, UK.
4. Barringer, H., Fisher, M., Gabbay, D., Gough, G., and Owens, R.: 1995, MetateM: an introduction, Formal Aspects of Computing 7(5), 533–549.
5. Belnap, N. and Perloff, M.: 1988, Seeing to it that: A canonical form for agentives, Theroria 9, 175–199.