Crosslinked sulfonated poly (bis-A)-sulfones as proton exchange membrane for PEM fuel cell application Yu, Jianjia ; Dong, Chao ; Liu, Jianhong ; Li, Cuihua ; Fang, Jianhua ; Guan, Rong Abstract Publication: Journal of Materials Science Pub Date: February 2010 DOI: 10.1007/s10853-009-4033-3 Bibcode: 2010JMatS..45.1017Y