1. Amalgamating Language and Metalanguage in Logic Programming;Bowen,1982
2. A General Framework for Structuring Logic Programs;Brogi,1990
3. Composing Open Logic Theories;Brogi,1991
4. Hierarchies through Basic Meta-Level Operators;Brogi,1990
5. Meta-Level Programming and Knowledge Representation;Bowen;New Generation Computing,1985