Andrianny Murshidi, Julie, Nurasiah Umor, Muhd Khairul Tazril, and Meor Yusoff M.S. 2002. “Physical and Morphological Properties of Zirconia Produced at Different Precipitating Conditions”. Malaysian Journal of Science 21 (December):97-99. https://ejournal.um.edu.my/index.php/MJS/article/view/8864.