Botella, J., C. Merino, M. A. Heredia, and J. Almagro. 1999. “Quantitative Relations Between Sulphur and Sulphide Contents in AISI 303 Stainless Steels: Influence of the Sulphide Chemical Composition”. Revista De Metalurgia 35 (3):173-81. https://doi.org/10.3989/revmetalm.1999.v35.i3.621.