@misc{karrasch_vertical_distribution_1990, 
author={Karrasch, B., Hoppe, H.-G.},
title={Vertical distribution and activity of bacteria in the Central Arabian Sea},
year={1990},
howpublished = {journal article},
note = {Karrasch, B.; Hoppe, H.: Vertical distribution and activity of bacteria in the Central Arabian Sea. Kieler Meeresforschungen,  Sonderheft. 1990. no. 8, 74-80.}}