@article {wenig2003, title = {Intercontinental transport of nitrogen oxide pollution plumes}, journal = {Atmos. Chem. Phys.}, volume = {3}, year = {2003}, pages = {387--393}, doi = {10.5194/acp-3-387-2003}, author = {Mark Wenig and N. Spichtinger and A. Stohl and G. Held and S. Beirle and T. Wagner and Bernd J{\"a}hne and Ulrich Platt} } @article {wenig2002, title = {Intercontinental transport of nitrogen oxide pollution plumes}, journal = {acpd}, volume = {3}, year = {2002}, pages = {2151--2165}, doi = {10.5194/acpd-2-2151-2002}, author = {Mark Wenig and N. Spichtinger and A. Stohl and G. Held and S. Beirle and T. Wagner and Bernd J{\"a}hne and Ulrich Platt} }