@misc{mai_polyelektrolytmembranen_aus_1990, 
author={Mai, P. T.,Chandy, T.,Paul, D.,Schwarz, H.-H.},
title={Polyelektrolytmembranen aus Chitosan},
year={1990},
howpublished = {journal article},
note = {Online available at: \url{} (DOI). Mai, P.; Chandy, T.; Paul, D.; Schwarz, H.: Polyelektrolytmembranen aus Chitosan. Acta Polymerica. 1990. vol. 41, 198-199.}}