@misc{colijn_effects_of_2002, 
author={Colijn, F.,Hesse, K.-J.,Ladwig, N.,Tillmann, U.},
title={Effects of the large-scale uncontrolled fertilisation process along the continental coastal North Sea},
year={2002},
howpublished = {journal article},
note = {Online available at: \url{} (DOI). Colijn, F.; Hesse, K.; Ladwig, N.; Tillmann, U.: Effects of the large-scale uncontrolled fertilisation process along the continental coastal North Sea. Hydrobiologia. 2002. vol. 484, 133-148.}}