Le, Quynh, Vu Nguyen, Hoang Tran, and Ha Huynh. 2016. “Synthesis of SrFe12O19 by Sol-Gel Method and Its Morphology and Magnetic Properties”. Science and Technology Development Journal 19 (3), 5-10. https://doi.org/https://doi.org/10.32508/stdj.v19i3.586.