Betulinic acid derivatives NVX-207 and B10 for treatment of glioblastoma – an in vitro study of cytotoxicity and radiosensitization - Bache, M; Bernhardt, S; Passin, S; Wichmann, H; Hein, A; Zschornak, M; Kappler, M; Taubert, H; Paschke, R; Vordermark, D (Int J Mol Sci, 2014)