Deeswasmongkol, Kamolwan, and Naraphorn Haphuriwat Paoprasert. “Design of Biogas Production Using Wastewater from Industrial Plants: Financial Analysis of Various Feed-in-Tariff Remunerations in Thailand”. International Journal of Energy Economics and Policy, vol. 6, no. 2, Apr. 2016, pp. 318-34, https://mail.econjournals.com/index.php/ijeep/article/view/2067.