CỰ, Nguyễn Xuân.
 Selection of High-yielding Tree  and Grass Species for Cattle Feed Suitable  for Ecological Conditions in Ha Giang.
<strong>VNU Journal of Science: Earth and Environmental Sciences</strong>, [S.l.], v. 33, n. 1S, nov. 2017.
ISSN 2588-1094.
Available at: &lt;<a href="https://js.vnu.edu.vn/EES/article/view/4131" target="_new">https://js.vnu.edu.vn/EES/article/view/4131</a>&gt;. Date accessed: 16 apr. 2024.
doi: <a href="https://doi.org/10.25073/2588-1094/vnuees.4131">https://doi.org/10.25073/2588-1094/vnuees.4131</a>.