@Article{acp-7-295-2007,
AUTHOR = {Assonov, S. S. and Brenninkmeijer, C. A. M. and J\"ockel, P. and Mulvaney, R. and Bernard, S. and Chappellaz, J.},
TITLE = {Evidence for a CO increase in the SH during the 20th century based on firn air samples from Berkner Island, Antarctica},
JOURNAL = {Atmospheric Chemistry and Physics},
VOLUME = {7},
YEAR = {2007},
NUMBER = {2},
PAGES = {295--308},
URL = {http://www.atmos-chem-phys.net/7/295/2007/},
DOI = {10.5194/acp-7-295-2007}
}