@Article{ars-5-29-2007,
AUTHOR = {Rolfes, I.},
TITLE = {Obstacle-based self-calibration techniques for the determination of the permittivity of liquids},
JOURNAL = {Advances in Radio Science},
VOLUME = {5},
YEAR = {2007},
PAGES = {29--35},
URL = {http://www.adv-radio-sci.net/5/29/2007/},
ISSN = {1684-9965}
}