A Visual Logic Programming Language. - Jordi Puigsegur; Jaume Agustí-Cullell; David Stuart Robertson 001 (VL, 1996)

From Queries to Answers in Visual Logic Programming. - Jordi Puigsegur; W. Marco Schorlemmer; Jaume Agustí-Cullell (VL, 1997)

Visual Logic Programming by Means of Diagram Transformations. - Jordi Puigsegur; Jaume Agustí-Cullell (APPIA-GULP-PRODE, 1998)

Towards Visual Schemas in Deductive Databases. - Jordi Puigsegur; Jaume Agustí-Cullell; Joan Antoni Pastor (DEXA, 1998)

Query Answering by Means of Diagram Transformation. - Jaume Agustí-Cullell; Jordi Puigsegur; W. Marco Schorlemmer (FQAS, 1998)

A Visual Syntax for Logic and Logic Programming. - Jaume Agustí-Cullell; Jordi Puigsegur; David Stuart Robertson 001 (J. Vis. Lang. Comput., 1998)