Sy Chung, L., 		Quoc Viet, N., 		Minh Tien, T., 		Minh Phuong, N., 		Sy Chinh, L., & 		Anh Hung, P.
2024 Oct 24.  Using Biochar to Improve Soil Fertility and Productivity  of Drought-Tolerant Sweet Potatoes  in Thanh Hoa Coastal Sandy Soil. VNU Journal of Science: Earth and Environmental Sciences. [Online] :