| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Natural Draught Cooling Towers: Proceedings of the 2. International Symposium, Ruhr-Universität Bochum, Germany, September 5-7, 1984 | 978-3-540-13703-0 (3-540-13703-3) | 1984 | P. L. Gould · W. B. Krätzig · U. Wittek |
| Natural Draught Cooling Towers: Proceedings of the Fifth International Symposium on Natural Draught Cooling Towers, Istanbul, Turkey, 20-22 May 2004 | 978-90-5809-642-5 (90-5809-642-4) | 2004 | U. Wittek |