1. E. Brinksma, “On the Design of Extended LOTOS“, Ph.D. Thesis, University of Twente, 1988.
2. E. Brinksma (ed.) — ISO — Information Processing Systems — Open Systems Interconnection — “LOTOS — A Formal Description Technique Based on the Temporal Ordering of Observational Behaviour”, IS 8807, 1989.
3. T. Bolognesi, E. Brinksma, “Introduction to the ISO Specification Language LOTOS”, Computer Networks and ISDN Systems, Vol. 14, No 1, 1987.
4. J.C.M. Baeten, J.A. Bergstra, ‘Real Time Process Algebra', Technical Report, Centre for Mathematics and Computer Science, Amsterdam, 1989.
5. T. Bolognesi, P. Cremonese, “The Weakness of Some Timed Models for Concurrent Systems”, Technical Report CNUCE C89-29, CNUCE-C.N.R., Pisa, October 1989.