L. BENEA, F. WENGER, P. PONTHIAUX, and J.-P. CELIS, “Improved Hardness and Tribocorrosion Properties of Nickel Coatings by Co-Depositing ZrO2 MicroSized Dispersed Phase During Electroplating Process”, The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, vol. 29, no. 1, pp. 17-26, May 2006.