@misc{matthias_the_contribution_2011, 
author={Matthias, V.,Aulinger, A.,Quante, M.},
title={The Contribution of Ship Emissions to Enhanced Nitrogen Aerosol Concentration and Deposition in the North Sea Region},
year={2011},
howpublished = {conference poster: Urbino (I); 13.-16.09.2011},
note = {Online available at: \url{} (DOI). Matthias, V.; Aulinger, A.; Quante, M.: The Contribution of Ship Emissions to Enhanced Nitrogen Aerosol Concentration and Deposition in the North Sea Region. In: 3rd Urbino Symposium Air Quality and Climate Change, ACCENT. Urbino (I). 2011.}}