Salazar, M., H. J. Quesada, and E. P. Asta. “Microstructure Produced in the Welding of Steels for Wide Diameter Pipes”. Revista De Metalurgia, vol. 34, no. 6, Dec. 1998, pp. 469-75, doi:10.3989/revmetalm.1998.v34.i6.814.