1. ?Optimizing the weld seam strength of moldings through improved process control and automatic setting,? dissertation 1987, University-GH Paderborn, DVS-Verlag GmbH, Düsseldorf (1988).
2. ?An analysis of the heated-tool butt welding of pipes made of semi-crystalline thermoplastics,? DVS-Verlag GmbH, Düsseldorf, DVS report, 84, 41 (1983).
3. ?Optimizing the parameters in heated-tool butt welding taking HDPE as an example.? dissertation 1987, University-GH Paderborn; DVS-Verlag GmbH. Düsseldorf, Schwei?technische Forschungsberichte Band 18 (1988).
4. Die Ähnlichkeitstheorie to der physikalisch-technischen Forschung (Theoretical aspects of similarity in physical and technical research), Springer-Verlag Berlin/Heidelberg/New York (1971).