@Article{acp-7-2119-2007,
AUTHOR = {Lassey, K. R. and Etheridge, D. M. and Lowe, D. C. and Smith, A. M. and Ferretti, D. F.},
TITLE = {Centennial evolution of the atmospheric methane budget: what do the carbon isotopes tell us?},
JOURNAL = {Atmospheric Chemistry and Physics},
VOLUME = {7},
YEAR = {2007},
NUMBER = {8},
PAGES = {2119--2139},
URL = {http://www.atmos-chem-phys.net/7/2119/2007/},
DOI = {10.5194/acp-7-2119-2007}
}