Piyanat Kotaphan และ Anuvat Sirivat. (2013) Sulfonated poly(2,6-Dimethyl-1,4-phenylene oxide)composite membrane filled by zeolite for direct methanol fuel cell. Chulalongkorn University:ม.ป.ท.Piyanat Kotaphan และ Anuvat Sirivat. 2013. Sulfonated poly(2,6-Dimethyl-1,4-phenylene oxide)composite membrane filled by zeolite for direct methanol fuel cell. ม.ป.ท.:Chulalongkorn University;Piyanat Kotaphan และ Anuvat Sirivat. Sulfonated poly(2,6-Dimethyl-1,4-phenylene oxide)composite membrane filled by zeolite for direct methanol fuel cell. ม.ป.ท.:Chulalongkorn University, 2013. Print.