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@ARTICLE{2007JGeod..81...81D,
author = {{Ditmar}, P. and {Klees}, R. and {Liu}, X.},
title = "{Frequency-dependent data weighting in global gravity field modeling from satellite data contaminated by non-stationary noise}",
journal = {Journal of Geodesy},
keywords = {Earth{\amp}rsquo, s gravity field, Colored noise, Covariance matrix estimation, CHAMP (CHAllenging Mini-satellite Payload), Satellite-borne accelerometer},
year = 2007,
month = jan,
volume = 81,
pages = {81-96},
doi = {10.1007/s00190-006-0074-4},
adsurl = {http://adsabs.harvard.edu/abs/2007JGeod..81...81D},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}