%0 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 %P 661-666 %T Covalent immobilization of enzymes in different porous polymer membranes %U %X