Pattharaprachayakul, Napisa, Narumon Kesonlam, Pongpitak Duangjumpa, Vilai Rungsardthong, Worakrit Suvajittanont, and Buddhi Lamsal. 2021. “Optimization of Hydraulic Retention Time and Organic Loading Rate in Anaerobic Digestion of Squeezed Pineapple Liquid Wastes for Biogas Production”. Applied Science and Engineering Progress 14 (3):468-76. https://doi.org/10.14416/j.asep.2021.04.004.