Using Generalised Directive Models in Knowledge Acquisition. - Gertjan van Heijst; Peter Terpstra; Bob J. Wielinga; Nigel Shadbolt (EKAW, 1992)

Generic Tasks in KEW. - Dean Allemang; Gertjan van Heijst (EKAW, 1993)

Knowledge Based Integration of Representation Formalisms. - Gertjan van Heijst; Wilfried Post; Guus Schreiber (ECAI, 1994)

CUE: Ontology-Based Knowledge Acquisition. - Gertjan van Heijst; Guus Schreiber (EKAW, 1994)

Foundations for a methodology for medical KBS development. - Gertjan van Heijst; Guus Schreiber; Giordano Lanzola; Marlo Stefanelli (Knowl. Acquis., 1994)

A case study in ontology library construction. - Gertjan van Heijst; Sabina Falasconi; Ameen Abu-Hanna; Guus Schreiber; Mario Stefanelli (Artif. Intell. Medicine, 1995)

Using explicit ontologies in KBS development. - Gertjan van Heijst; A. Th. Schreiber; Bob J. Wielinga (Int. J. Hum. Comput. Stud., 1997)

Roles are not classes: a reply to Nicola Guarino. - Gertjan van Heijst; A. Th. Schreiber; Bob J. Wielinga (Int. J. Hum. Comput. Stud., 1997)

The Lessons Learned Cycle. - Gertjan van Heijst; Rob van der Spek; Eelco Kruizinga (Information Technology for Knowledge Management, 1998)

Generalized directive models: integrating model development and knowledge acquisition. - Kieron O'Hara; Nigel Shadbolt; Gertjan van Heijst (Int. J. Hum. Comput. Stud., 1998)