@Article{acp-11-9141-2011,
AUTHOR = {Monteil, G. and Houweling, S. and Dlugockenky, E. J. and Maenhout, G. and Vaughn, B. H. and White, J. W. C. and Rockmann, T.},
TITLE = {Interpreting methane variations in the past two decades  using measurements of CH$_{4}$ mixing ratio and isotopic composition},
JOURNAL = {Atmospheric Chemistry and Physics},
VOLUME = {11},
YEAR = {2011},
NUMBER = {17},
PAGES = {9141--9153},
URL = {http://www.atmos-chem-phys.net/11/9141/2011/},
DOI = {10.5194/acp-11-9141-2011}
}