Yamazaki K, Tanaka M, Kawakami H. High Proton Conductive Sulfonated Graph Copolyimide Membranes Containing Chemically Stable Naphthalene Moieties. JAMST [Internet]. 2017 Nov. 22 [cited 2024 Nov. 22];12(1). Available from: https://amst.utm.my/index.php/amst/article/view/81