Saldaña, E., H. Castro, C. Rodríguez, and J. Belzunce. “Properties of Microalloyed Steels Used for Sour Gas Transportation”. Revista De Metalurgia, vol. 37, no. 2, Apr. 2001, pp. 103-7, doi:10.3989/revmetalm.2001.v37.i2.446.