EXPRESS: An Experimental Interface for Factual Information Retrieval. - Heinz Ulrich Hoppe; Karin Ammersbach; Barbara Lutes-Schaab; Gaby Zinßmeister (SIGIR, 1990)

An Online Thesaurus for Fact Retrieval From Relational Databases. - Barbara Lutes-Schaab (Terminology and Knowledge Engineering (Vol. 2), 1990)