The algebraic specification of abstract data types is now awell establishedresearch topic in computer science. The main topics covered by theworkshop were:- Modularization- Object orientation- Higher-order types anddependent types- Inductive completion- Algebraic high-level nets.

ADT implementation and completion by induction from examples.- An association of Algebraic term nets and abstract data types for specifying real communication protocols.- The specification language GSBL.- Composition of algebraic high-level nets.- A match operation for rule-based modular system design.- Towards object-oriented algebraic specifications.- Inductive completion for transformation of equational specifications.- A notion of implementation for the specification language OBSCURE.- Model-theoretic specifications and back-and-forth equivalences.- Universal algebra in higher types.- Clausal rewriting: Applications and implementation.- Constraints for behavioural specifications.- Entities: An institution for dynamic systems.- A 2-category approach to critical pair completion.- A kernel specification formalism with higher-order parameterisation.- Extended ML: Past, present and future.- Dependent types considered necessary for specification languages.- Generic types in a language for data directed design.- Design of a compiler for lazy pattern driven narrowing.

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