Aballe, A., M. Bethencourt, F. J. Botana, M. Marcos, J. Pérez, and M. A. Rodríguez. 1997. “Green Inhibitors. Rare Earth Based Systems”. Revista De Metalurgia 33 (6):363-69. https://doi.org/10.3989/revmetalm.1997.v33.i6.770.