Amin, Muhammad Mohamed, et al. “Rheological Analysis of Zirconia-Hydroxyapatite With Bi-Modal System of Binders; Low-Density Polyethylene and Palm Stearin”. International Journal of Integrated Engineering, vol. 15, no. 5, Oct. 2023, pp. 179-88, https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/15070.