Integration of Functions in the Fixpoint Semantics of Rule-Based Systems. - Erik Lambrichts; Peter Nees; Jan Paredaens; Peter Peelman; Letizia Tanca (MFDBS, 1989)

Integration of Functions in Logic Database Systems. - Erik Lambrichts; Peter Nees; Jan Paredaens; Peter Peelman (Data Knowl. Eng., 1990)

Checking Functional Consistency in Deductive Databases. - Erik Lambrichts; Peter Nees; Jan Paredaens; Peter Peelman; Letizia Tanca (Inf. Process. Lett., 1990)

G-Log: A Declarative Graphical Query Language. - Jan Paredaens; Peter Peelman; Letizia Tanca (DOOD, 1991)

Deductive Languages: A Graph-Based Approach. - Peter Peelman; Jan Paredaens; Letizia Tanca (FMLDO, 1991)

A Computational Model for Generic Graph Functions. - Marc Gemis; Jan Paredaens; Peter Peelman; Jan Van den Bussche (Dagstuhl Seminar on Graph Transformations in Computer Science, 1993)

Merging Graph Based and Rule Based Computation. - Jan Paredaens; Peter Peelman; Letizia Tanca (Rules in Database Systems, 1993)

Clarifying the Structure of Complex Venn Diagrams. - Susmita Ray; Peter Peelman; Jan Paredaens (Advanced Visual Interfaces, 1994)

G-Log: A Graph-Based Query Language. - Jan Paredaens; Peter Peelman; Letizia Tanca (IEEE Trans. Knowl. Data Eng., 1995)

Merging Graph-Based and Rule-Based Computation: The Language G-Log. - Jan Paredaens; Peter Peelman; Letizia Tanca (Data Knowl. Eng., 1998)

Expressiveness and Complexity of Generic Graph Machines. - Marc Gemis; Jan Paredaens; Peter Peelman; Jan Van den Bussche (Theory Comput. Syst., 1998)