Nguyên, N., 		Loan, Ä., & 		Hồi, N.
(2013).
 Development of Water Quality Index for Coastal Zone and Application in the Hạ Long Bay.
<em>VNU Journal Of Science: Earth And Environmental Sciences, 29</em>(4).
Retrieved from <a href="https://js.vnu.edu.vn/EES/article/view/1119" target="_new">https://js.vnu.edu.vn/EES/article/view/1119</a>