@misc{bewersdorff_the_contribution_2008, 
author={Bewersdorff, I., Aulinger, A., Matthias, V., Quante, M.},
title={The contribution of ship exhaust to air pollution in North Sea coastal areas},
year={2008},
howpublished = {conference lecture: Graz (A);},
note = {Bewersdorff, I.; Aulinger, A.; Matthias, V.; Quante, M.: The contribution of ship exhaust to air pollution in North Sea coastal areas. 17th International Symposium on Transport and Air Pollution. Graz (A), 2008.}}