%0 conference paper,conference lecture %@ %A Fritsch, D.,Peinemann, K.-V. %D 1991 %J 2nd European Technical Symposium on Polyimide und High Temperature Polymers; STEPI 2 %N %P IV-4 %T Permeation of vapor and liquid mixtures through thin film maleimide copolymer membranes %U %X