@Article{ars-2-275-2004,
AUTHOR = {Jakowski, N. and Tsybulya, K.},
TITLE = {Comparison of ionospheric radio occultation CHAMP data with IRI 2001},
JOURNAL = {Advances in Radio Science},
VOLUME = {2},
YEAR = {2004},
PAGES = {275--279},
URL = {http://www.adv-radio-sci.net/2/275/2004/},
ISSN = {1684-9965}
}