@Article{acp-4-2561-2004,
AUTHOR = {Butler, T. M. and Simmonds, I. and Rayner, P. J.},
TITLE = {Mass balance inverse modelling of methane in the 1990s using a Chemistry Transport Model},
JOURNAL = {Atmospheric Chemistry and Physics},
VOLUME = {4},
YEAR = {2004},
NUMBER = {11/12},
PAGES = {2561--2580},
URL = {http://www.atmos-chem-phys.net/4/2561/2004/},
DOI = {10.5194/acp-4-2561-2004}
}