%0 conference lecture (invited) %@ %A Fritsch, D.,Vakhtangishvili, L.,Kricheldorf, H.-R. %D 2001 %J 2001 Prague Meetings on Macromolecules, 41th Microsymposium, 'Polymer Membranes' %N %P %T Highly Branched Sulfonated Polyethersulfones and Polyetherketones: Syntheses and Possible Application in Membrane Processes %U %X