Numchok Manmai, Katherine Bautista, Yuwalee Unpaprom and Rameshprabu Ramaraj 2019. Optimization of combined pre-treatments on sugarcane leaves for bioethanol production. Maejo International Journal of Energy and Environmental Communication. 1, 1 (Mar. 2019), 30–39. DOI:https://doi.org/10.54279/mijeec.v1i1.244898.