%0 conference paper %@ %A Fritsch, D.,Vetter, S.,Zolutukhin, M.,Sansores, L.,Buder, I.,Pereira Nunes, S. %D 2006 %J Polycondensation 2006 %N %P 36 %T Uncommon Sulfonated and Phosphonated Polymers Developed for Fuel Cell Membranes %U %X