1. F. Antonacci, L. Bartolo, P. Orco, and N. Spadaveccia, AQL: A relational database management system and its geographical applications, in Ref. 7, pp. 569–599.
2. K. Assmann and K.-H. Höhne, An investigation of structures and operations for medical image data bases, Proc. 2nd Conf. on Picture Archiving and Communication Systems (PACS II), SPIE 418, 1983.
3. K. Assmann, R. Venema, M. Riemer, and K. H. Höhne, The ISQL language—A uniform 282 tool for managing images and non-image data in an image data base management system, Proc. ISMII 84, IEEE International Symposium on Medical Images and Icons, Arlington, Virginia, July 24–27, 1984.
4. K. Assmann, Szenario für eine Medizinische Bilddatenbank, Internal report, Institut für Mathematik und Datenverarbeitung in der Medizin, Universität Hamburg, 1983.
5. R. Bayer, Database technology for expert systems, in Wissensbasierte Systeme, GI-Kongress 1985, Reihe Informatik-Fachberichte Nor. 112, Springer-Verlag, Berlin, 1985, pp. 1– 16.