@misc{bengtson_pervaporation_of_1990, 
author={Bengtson, G.,Boeddeker, K. W.,Pingel, H.},
title={Pervaporation of isomeric butanols},
year={1990},
howpublished = {journal article,GKSS report},
note = {Online available at: \url{} (DOI). Bengtson, G.; Boeddeker, K.; Pingel, H.: Pervaporation of isomeric butanols. Journal of Membrane Science. 1990. vol. 54, 1-12.}}