xuan Huan, Nguyen, 		Ngoc Minh, Nguyen, AND 		Minh Tien, Tran.
" Effects of Silica-Biochar, Bentonite and Diatomite Ratios  on Properties of Controlled Release Fertilizer" <em>VNU Journal of Science: Earth and Environmental Sciences</em> [Online], Volume 39 Number 4 (29 December 2023)