@article{mujahid_sarfraz_amin_2015,  title={On the Formation of Hydroxyapatite Nano Crystals Prepared Using Cationic Surfactant},  volume={18},  ISSN={1516-1439},  url={https://doi.org/10.1590/1516-1439.298014},  DOI={10.1590/1516-1439.298014},  number={3},  journal={Materials Research},  publisher={ABM, ABC, ABPol},  author={Mujahid, Mohammad and Sarfraz, Sadaf and Amin, Shahid},  year={2015},  month={May},  pages={468–472} }