Sunit Hendrana, Erwin, Krisman, Syakbaniah, Isna’im, Yusmeri, et al. APPLICATION OF SULFONATED POLYSTYRENE IN POLYMER ELECTROLYTE FUEL CELL. j. sains materi indonesia [Internet]. 2018 Oct. 31 [cited 2026 Nov. 9];20(1):44-9. Available from: https://ejournal.brin.go.id/jsmi/article/view/6014