%0 conference paper,conference lecture %@ %A Hicke, H.-G.,Becker, M.,Ulbricht, M.,Oechel, A.,Malsch, G. %D 1998 %J Stability and Stabilization of Biocatalysts - Progress in Biotechnology %N %P 661-666 %T Covalent immobilization of enzymes in different porous polymer membranes %U %X