@Article{acp-4-2393-2004,
AUTHOR = {Platt, U. and Allan, W. and Lowe, D.},
TITLE = {Hemispheric average Cl atom concentration from $^{13}$C/$^{12}$C ratios in atmospheric methane},
JOURNAL = {Atmospheric Chemistry and Physics},
VOLUME = {4},
YEAR = {2004},
NUMBER = {9/10},
PAGES = {2393--2399},
URL = {http://www.atmos-chem-phys.net/4/2393/2004/},
ISSN = {1680-7316}
}