Phan, T., & 		Đoàn, M.
(2015).
 Ecological Services Analysis: Some Evidences and Policy Implications for Socio- Economic Development of Ecosystems of Việt Trì City, Phú Thọ Province.
<em>VNU Journal Of Science: Natural Sciences And Technology, 31</em>(1).
Retrieved from <a href="https://js.vnu.edu.vn/NST/article/view/68" target="_new">https://js.vnu.edu.vn/NST/article/view/68</a>