"Sulfonated poly(ether sulfone) for universal polymer electrolyte fuel cell operations"
H.-J. Kim, N. N. Krishnan, S.-Y. Lee, S. Y. Hwang, D. Kim, K. J. Jeong, J. K. Lee, E. A. Cho, J. Lee, J. Han, H. Y. Ha, T.-H. Lim*
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(2006),
160 (1), 353-358