1. D.C. Montgomery, Design and Analysis of Experiments, Chapter 9, Wiley, 1991.
2. W.D. Piffer, Msc. Thesis, Federal University of Minas Gerais, 1996, in Portuguese.
3. P.J. Modenesi, in: XXII National Meeting on Welding Technology, Brazilian Welding Society, 1996, p. 197, in Portuguese.
4. Physics of welding (III) ‐ Melting rate and temperature distribution of electrode wire
5. A.A. Smith, Physics of the Welding Arc-A Symposium, Institute of Welding, 1962, p. 75.