@Article{acpd-5-1891-2005,
AUTHOR = {Bruhwiler, L. M. P. and Michalak, A. M. and Peters, W. and Baker, D. F. and Tans, P.},
TITLE = {An improved Kalman Smoother for atmospheric inversions},
JOURNAL = {Atmospheric Chemistry and Physics Discussions},
VOLUME = {5},
YEAR = {2005},
NUMBER = {2},
PAGES = {1891--1923},
URL = {http://www.atmos-chem-phys-discuss.net/5/1891/2005/},
ISSN = {1680-7367}
}