SYGMA: A General Object-oriented Medical Application Development System. - Miroslav Madjaric; Günther Gell (MIE, 1991)

HIS Purchase Project: Preliminary Report. - Miroslav Madjaric; Werner Leodolter; Hubert Leitner; Günther Gell (MIE, 1999)

HIS purchase projects in public hospitals of Styria, Austria. - Günther Gell; Miroslav Madjaric; Werner Leodolter; Wolfgang Köle; Hubert Leitner (Int. J. Medical Informatics, 2000)