Thinh, N.
(2011).
 Application of landscape’s entropy problem  for monitoring and evaluating trend of reforestation:  a case study of Sa Pa district, Lao Cai province, Vietnam.
<em>VNU Journal Of Science: Earth And Environmental Sciences, 27</em>(4).
Retrieved from <a href="https://js.vnu.edu.vn/EES/article/view/1519" target="_new">https://js.vnu.edu.vn/EES/article/view/1519</a>