@misc{smalla_potential_environmental_1991, 
author={Smalla, K.,Isemann, M.,John, G.,Weege, K. H.,Wendt, K.,Niepold, F.,Backhaus, H.},
title={Potential environmental risks of an alpha-amylase production with a genetically engineered Bacillus subtilis strain},
year={1991},
howpublished = {journal article},
note = {Online available at: \url{} (DOI). Smalla, K.; Isemann, M.; John, G.; Weege, K.; Wendt, K.; Niepold, F.; Backhaus, H.: Potential environmental risks of an alpha-amylase production with a genetically engineered Bacillus subtilis strain. Zentralblatt fuer Hygiene und Umweltmedizin. 1991. vol. 91, 25.}}