Abreu, C. M., Cristóbal, J., Nóvoa, X. R., Pena, G., & Pérez, M. C. (2004). Analysis of the passive layer developed on stainless steels implanted with chromium. Revista De Metalurgia, 40(3), 224–229. https://doi.org/10.3989/revmetalm.2004.v40.i3.269