@misc{bewersdorff_the_contribution_2008, 
author={Bewersdorff, I.,Aulinger, A.,Matthias, V.,Quante, M.},
title={The contribution of Benzo(a)pyrene ship emissions to air pollution in North Sea coastal areas},
year={2008},
howpublished = {conference lecture: Rotterdam (NL); 29.-30.05.2008},
note = {Online available at: \url{} (DOI). Bewersdorff, I.; Aulinger, A.; Matthias, V.; Quante, M.: The contribution of Benzo(a)pyrene ship emissions to air pollution in North Sea coastal areas. 2nd International Scientific Conference on Harbours, Air Quality and Climate Change. Rotterdam (NL), 2008.}}