ALIAS, MASLINDA, et al. “The Effect of Sintering Temperature on Characteris-Tic and Properties of Hydroxyapatite Extracted from Fish Scale Bio-Waste”. International Journal of Engineering & Technology, vol. 7, no. 4, Nov. 2018, pp. 3726-30, https://doi.org/10.14419/ijet.v7i4.11939.