@misc{karrasch_microbiology_of_1993, 
author={Karrasch, B.,Carstensen, A.,De Wall, J.},
title={Microbiology of the upper mixed layer},
year={1993},
howpublished = {journal article},
note = {Online available at: \url{} (DOI). Karrasch, B.; Carstensen, A.; De Wall, J.: Microbiology of the upper mixed layer. Meteor - Berichte. 1993. 117-210.}}