1. Innovative metal forming processes to manufacture future sheet metal products;Kopp,1999
2. Vom innovativen Halbzeug zum Hochleistungsprodukt;Kopp,2001
3. Herstellung und Weiterverarbeitung von Tailor Rolled Blanks - aktuelle Forschung am IBF;Kopp,2001
4. R. Watanabe State of research on design and processing of functionally graded materials Functionally Graded Materials in the 21st Century: A Workshop on Trends and Forecasts Tsukuba (Japan) 2000