@Article{acp-3-2225-2003, AUTHOR = {Beirle, S. and Platt, U. and Wenig, M. and Wagner, T.}, TITLE = {Weekly cycle of NO$_{2}$ by GOME measurements: a signature of anthropogenic sources}, JOURNAL = {Atmospheric Chemistry and Physics}, VOLUME = {3}, YEAR = {2003}, NUMBER = {6}, PAGES = {2225--2232}, URL = {http://www.atmos-chem-phys.net/3/2225/2003/}, ISSN = {1680-7316} }