@Article{acpd-4-2283-2004,
AUTHOR = {Platt, U. and Allen, W. and Lowe, D.},
TITLE = {Hemispheric average Cl atom concentration from $^{13}$C/$^{12}$C ratios in atmospheric methane},
JOURNAL = {Atmospheric Chemistry and Physics Discussions},
VOLUME = {4},
YEAR = {2004},
NUMBER = {3},
PAGES = {2283--2300},
URL = {http://www.atmos-chem-phys-discuss.net/4/2283/2004/},
ISSN = {1680-7367}
}