“Duplex Electroless Ni-P Ni-Cu-P Coatings: Preparation, Evaluation of Microhardness, Friction, Wear, and Corrosion Performance: Technical Report”. Journal of Electrochemical Science and Engineering, vol. 12, no. 6, Oct. 2022, pp. 1261-82, https://doi.org/10.5599/jese.1392.