Kei Hoa, Ng, et al. “Influence of Silver (Ag) Addition on the Morphological and Thermal Characteristics of NiO-SDC Carbonate Composite Anode”. International Journal of Integrated Engineering, vol. 10, no. 1, Apr. 2018, https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/2256.