Imre Hajdok, Aron Bona, Hans-Joachim Werner, and Jochen Kerres. Synthesis and characterization of fluorinated and sulfonated poly(arylene ether-1,3,4-oxadiazole) derivatives and their blend membranes. European Polymer Journal, (52):76--87, Elsevier BV, March 2014. [PUMA: hajdok icvt journal kerres] URL