THANH BINH, Nguyen; 						NGHIEM, Ha Tran Quang.
 The Effects of Biochar  on Exchangeable Metal Concentration in Paddy Soils.
<strong>VNU Journal of Science: Earth and Environmental Sciences</strong>, [S.l.], v. 39, n. 2, june 2023.
ISSN 2588-1094.
Available at: &lt;<a href="https://js.vnu.edu.vn/EES/article/view/4903" target="_new">https://js.vnu.edu.vn/EES/article/view/4903</a>&gt;. Date accessed: 20 nov. 2024.
doi: <a href="https://doi.org/10.25073/2588-1094/vnuees.4903">https://doi.org/10.25073/2588-1094/vnuees.4903</a>.