Modula-2 für die VAX: Beschreibung einer Systemübertragung. - Jürgen Koch; Manuel Mall; P. Putfarken (PASCAL, 1982)

Research in Database Programming: Language Constructs and Execution Models. - Joachim W. Schmidt; Manuel Reimer; P. Putfarken; Manuel Mall; Jürgen Koch; Matthias Jarke (IEEE Database Eng. Bull., 1983)