Shaofeng1, Zhu, et al. “Preparation and Properties of Electroless Deposited Ni-Zn-P-TiO2 Nano-Composite Coating”. Asian Journal of Chemistry, vol. 23, no. 5, Jan. 2011, pp. 2299-02, https://asianpubs.org/index.php/ajchem/article/view/10320.