Hirary, Marisa, Aditianto Ramelan, and . . “The Heat Treatment Effect of Nickel-Coated Steel Plate Substrate by Electroless Plating on Hardness Test”. International Journal of Engineering & Technology 7, no. 4.33 (December 9, 2018): 201–203. Accessed May 3, 2024. https://www.sciencepubco.com/index.php/ijet/article/view/23559.