“Alumina Influence on the Corrosion Resistance of Composite Layers Ni-P-Al2O3”. The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, vol. 38, no. 3, Sept. 2015, pp. 5-9, https://ojs.ugal.ro/index.php/mms/article/view/1295.