1. Instituto de Soldadura e Qualidade, 6 Months Report of ESCS project Laser Welding of Sub-assemblies Before Forming (Sept. 1993).
2. Instituto de Soldadura e Qualidade, 12 Months Report of ESCS project Laser Welding of Sub-assemblies Before Forming (March 1994).
3. IPU—Institute of Manufacturing Engineering, 12 Months Report of ESCS project Laser Welding of Sub-assemblies Before Forming (March 1994).
4. J. Heyden, K. Nilsson and C. Magnusson, Proc. 6th Lasers in Manufacturing Conference, 1989, p. 161.
5. G. L. Neiheisel, Proc. ICALEO 88, Laser Institute of America, 1988, p. 150.