Hartmut Ehrig, Michael Baldamus, Fernando Orejas. New Concepts of Amalgamation and Extension for a General Theory of Specifications. In Michel Bidoit, Christine Choppy, editors, Recent Trends in Data Type Specification, 8th Workshop on Specification of Abstract Data Types Joint with the 3rd COMPASS Workshop, Dourdan, France, August 26-30, 1991, Selected Papers. Volume 655 of Lecture Notes in Computer Science, pages 199-221, Springer, 1991.
Abstract is missing.