1. Riches S (2001) Automotive welding: industrial lasers and their application. Industry Search. Industracom, Australia
2. Pennington EJ (1987) US Patent No. 4642446
3. Piane AD, Sartorio F, Cantello M, Ghiringhello G (1987) US Patent No. 4682002
4. Rito N, Ohta M, Yamada T, Gotoh J, Kitagawa T (1988) US Patent No. 4745257
5. Imhoff R, Behler K, Gatzweiler W, Beyer E (1988) Laser beam welding in car body making. In: Proceedings of the 6th International Conference on Lasers in Manufacturing, pp 247–258