@misc{colijn_cosyna__2011, 
author={Colijn, F.},
title={COSYNA},
year={2011},
howpublished = {conference lecture: Hamburg (D); 21.-25.02.2011},
note = {Online available at: \url{} (DOI). Colijn, F.: COSYNA. Meeting ICES Working Group on Integrated Assessments of the North Sea. Hamburg (D), 2011.}}