Abdullah, Nooraihan, et al. “Electronic and Adsorption Properties of Furfural and Hydrogen on Cobalt Alumina Surfaces: A DFT Study”. Semarak International Journal of Electronic System Engineering, vol. 8, no. 1, Dec. 2025, pp. 1-10, https://semarakilmu.my/index.php/sijese/article/view/870.