Biosynthesis of oleanolic and ursolic acids by Salvia tomentosa Mill. plant cell suspension in shaking flasks and stirred tank bioreactor - Marchev, Andrey; Georgiev, Vasil; Ivanov, Ivan; Schulz, Sibylle; Steingroewer, Juliane; Blley, Thomas; Pavlov, Atanas (Biomedical papers of the Medical Faculty of the University Palacký, Olomouc Czech Republic, 2012)