@article{Scherliess_2006,
title={Utah State University Global Assimilation of Ionospheric Measurements Gaussā€Markov Kalman filter model of the ionosphere: Model description and validation},
volume={111},
ISSN={0148-0227},
url={http://dx.doi.org/10.1029/2006ja011712},
DOI={10.1029/2006ja011712},
number={A11},
journal={Journal of Geophysical Research: Space Physics},
publisher={American Geophysical Union (AGU)},
author={Scherliess,
L. and Schunk,
R. W. and Sojka,
J. J. and Thompson,
D. C. and Zhu,
L.},
year={2006},
month=nov }