Porkar, Patthanan, Wimon Sonchaem, Raywadee Roachanakanan, and Rungjarat Hutacharoen. 2017. “Improvement of the Quality and Precision of Biomass and Carbon Equations: Case Study of Mixed-Deciduous Degraded Forest of Thailand”. Environment and Natural Resources Journal 9 (2). Nakhon Pathom, Thailand:39-47. https://ph02.tci-thaijo.org/index.php/ennrj/article/view/82477.