@Article{acp-7-599-2007,
AUTHOR = {Punge, H. J. and Giorgetta, M. A.},
TITLE = {Differences between the QBO in the first and in the second half of the ERA-40 reanalysis},
JOURNAL = {Atmospheric Chemistry and Physics},
VOLUME = {7},
YEAR = {2007},
NUMBER = {3},
PAGES = {599--608},
URL = {http://www.atmos-chem-phys.net/7/599/2007/},
DOI = {10.5194/acp-7-599-2007}
}