Sghayer, A., A. . Diyaf, K. . Mazuz, and N. . . Issa. “The Correlation of Palladium Supported Carbon (Pd/C) Loading and Optimum Nafin Ionomer Weight Percent (wt.%) Content in the PEM Fuel Cell Catalyst Layer”. Solar Energy and Sustainable Development Journal, vol. 9, no. 1, June 2020, pp. 28-34, doi:10.51646/jsesd.v9i1.15.