Bautista, A., R. Lizarbe, E. Otero, V. López, and J. A. González. 1999. “New Alternatives to the Industrially Introduced Methods for the Sealing of Anodized Aluminium”. Revista De Metalurgia 35 (3):195-202. https://doi.org/10.3989/revmetalm.1999.v35.i3.624.