1. Multiparadigm specification languages;Astesiano,1994
2. Simple consequence relations;Avron;Inform. and Comput.,1991
3. Module algebra;Bergstra;J. ACM,1990
4. T. Borzyszkowski, Completeness of the logical system for structured specifications, in: F. Parisi-Presicce (Ed.), Recent Trends in Algebraic Development Techniques, Selected Papers, 12th Internat. Workshop WADT’97, Tarquinia, Italy, Springer Lecture Notes in Computer Science, vol. 1376, Springer, Berlin, June 1997, pp. 107–121.
5. Moving specification structures between logical systems;Borzyszkowski,1998