Secure Multimedia Applications and Teleservices - Security Requirements and Prototype for Health Care. - Herbert Bunz; A. Bertsch; Marjan Jurecic; Birgit Baum-Waidner; Christoph Capellaro (IWACA, 1994)

TMN Security: An Evolutionary Approach. - György Endersz; T. Gabrielsson; F. Morast; A. Bertsch; Herbert Bunz; Marjan Jurecic (IS&N, 1995)