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Rodriguez-Solano, C.; Hugentobler, U.; Steigenberger, P.; Sosnica, K.; Fritzsche, M. (2012). Non-conservative GNSS satellite modeling: long-term orbit behavior. In: EGU General Assembly 2012, Vienna, Austria, 22.-27.4.2012.
Fritzsche, M.; Ammann, R.A.; Droz, Sara Christine; Bianchetti, M.G.; Aebi, Christoph (2005). Changes in antimicrobial resistance of Escherichia coli causing urinary tract infections in hospitalized children. European journal of clinical microbiology & infectious diseases, 24(3), pp. 233-235. Springer 10.1007/s10096-005-1301-2