Expert systems and hypertext. - Roy Rada; Judith Barlow (Knowl. Eng. Rev., 1988)

Interacting WITH Computers. - Judith Barlow; Roy Rada; Dan Diaper (Interact. Comput., 1989)

Expertext for medical care and literature retrieval. - Roy Rada; Judith Barlow; Pieter E. Zanstra; Pieter de Vries Robbé; Djujan Bijstra; Jan Potharst (Artif. Intell. Medicine, 1990)

Document Ranking using an Enriched Thesaurus. - Roy Rada; Judith Barlow; Jan Potharst; Pieter E. Zanstra; Djujan Bijstra (J. Documentation, 1991)