1. Towards new hospital information systems. IFIP-IMIA Working Conf,1988
2. Hospital information systems: scope-design-architecture, IMIA WG 10 Working Conf,1992
3. Information systems with fading boundaries,1995
4. Current developments and future trends in information technology in healthcare;Clayton,1992
5. Setting the scene for the IMIA Working Group 10 working conference expanding HIS: fading boundaries;Bakker,1995