Habib, F., S. Alam, M. Irfan, S. Nosheen, H. Akhtar, W. Iqbal, and B. Soomro. “Development and Characterization of Porous Hydroxyapatite Scaffold by Using Polymeric Sponge Method”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 38, no. 2, Apr. 2018, pp. 1-7, https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/8230.