1. American Welding Society, “Recommended practices for local Heating of welds in Piping and Tubing”, 1990, AWS, Miami.
2. Bailey N., Coe F.R., Gooch T.G., Hart P.H.M., Jenkins N., Pargeter R.J., “Welding steels without hydrogen cracking (second edition)”, 1993, Abington Publishing, Cambridge.
3. Blodgett W., “Calculating cooling rates of arc spot welds”, Welding journal, December 1987.
4. Croft D.N., “Heat treatment of welded steel structures”, 1985, Abington Publishing, Cambridge.
5. Gherard Frank, “Computing the preheating temperatures for welding”, Welding and cutting, April 1988.