Diagnose-Expertensysteme brauchen Hypertext - Das Beispiel MAX. - Hans Delfs (Hypertext und Hypermedia, 1990)

TOROS-HYPER: A Tool for the Integration of Hyper Documents into Knowledge-Based Systems. - Hans Delfs; Klaus Winkelmann (DEXA, 1991)

TOROS - A System Integrating Object and Rule-Oriented Programming in a C/UNIX Environment. - Peter Suda; Hans Delfs (Struct. Program., 1991)

Introduction to Cryptography - Principles and Applications - Hans Delfs; Helmut Knebl (Springer, 2002)

Introduction to Cryptography - Principles and Applications, Second Edition - Hans Delfs; Helmut Knebl (Springer, 2007)

Introduction to Cryptography - Principles and Applications, Third Edition - Hans Delfs; Helmut Knebl (Springer, 2015)

3D modeling of selected assets, security zones and conduits. - Simon Seibt; Karl Waedt; Hans Delfs; Simon Odorfer (GI-Jahrestagung, 2016)