1. IEEE 802.11 standard,
http://grouper.ieee.org/groups/802/11/main.html
2. Abrial, J.-R.: Extending B without changing it (for developing distributed systems). In: Habrias, H. (ed.) First Conference on the B Method, Laboratoire LIANA, L’Institut Universitaire de Technologie (IUT) de Nantes, November 1996, pp. 169–190 (1996)
3. Back, R.-J.R.: A calculus of refinements for program derivations. Acta Informatica 25, 593–624 (1988)
4. Butler, M.J., Morgan, C.C.: Action systems, unbounded nondeterminism and infinite traces. Formal Aspects of Computing 7(1), 37–53 (1995)
5. Celiku, O., McIver, A.: Cost-based analysis of probabilistic programs mechanised in HOL. Nordic Journal of Computing (2004)