Kumar.D, Ajith, et al. “Synthesis and Characterization of Natural Hydroxyapatite (Hap) from Black Sumatraand Gallus Domesticus Bone for Orthopedic Applications”. International Journal of Psychosocial Rehabilitation, vol. 24, no. 2, Apr. 2020, pp. 1416-22, https://doi.org/10.61841/k91fvr54.