1. The CCITT-Specification and Description Language SDL;Belina;Computer Networks and ISDN Systems,1989
2. SDL, Recommendation Z.100, ITU-T, 1996.
3. W. Chun, P. D. Amer, Test case generation for protocols specified in Estelle, in: Proceedings of FORTE’90, Madrid, Spain, 1990, pp. 197–210.
4. Formal methods for generating protocol conformance test sequences;Dahbura;Proceedings of the IEEE,1990
5. Automatic generation of test scenario skeletons from protocol specifications written in Estelle;Favreau,1986