The combined effect of fludarabine monophosphate and radiation as well as gemcitabine and radiation on squamous carcinoma tumor cell lines in vitro. - Nitsche, Mirko; Christiansen, Hans; Hermann, Robert M.; Lücke, Eva-Maria; Peters, Kerstin; Rave-Fränk, Margret; Schmidberger, H.; Pradier, Olivier (International Journal of Radiation Biology, 2008)