1. 1) American Petroleum Institute: Specification for Line Pipe, API SPECIFICATION 5L, API, USA, (2013).
2. 2) R. Glodowski: Int. Seminar on Application Technologies of Vanadium in Flat Rolled Steels, Vanitec, UK, (2005), 43.
3. 3) A. M. Sage: Met. Technol., 10 (1983), 224.
4. 4) V. Schwinn, P. Fluess and J. Bauer: Rev. Metall. – CIT, 100 (2003), Issue 7, 8, 757.
5. 5) T. Siwecki, J. Eliasson, R. Lagneborg and B. Hutchinson: ISIJ Int., 50 (2010), 760.