1. Johnson K.I.: Spot welding carbon steel, Welding Journal Research Supplement, American Welding Society, 1960, vol. 39, no. 3, pp. 96s–98s
2. Gould J.E. and Peterson W.A.: Electrode life parametric studies, Sheet Metal Welding Conference III Proceedings, Paper 3, Detroit, MI, AWS Detroit Section, 1988.
3. Friedman L. M. and McCauley R.B.: Influence of metallurgical characteristics on resistance welding of galvanized steel, Welding Journal Research Supplement, Oct. 1969, pp. 454s-462s.
4. Gould J. E.: The effect of welding time and electrode diameter on the electrode life of a galvanized steel, Sheet Metal Welding Conference II Proceedings, Paper 12, Detroit, MI, AWS Detroit Section, 1986.
5. Kimchi M. and Gould J.E.: The effects of prepulse resistance spot welding schedules on the weldability characteristics of galvanized steel, SAE Technical Paper No. 900740, SAE, Warren, PA, 1990.