Essential Oils and Hexane Extracts from Leaves and Fruits of Cistus monspeliensis. Cytotoxic Activity of ent-13-epi-Manoyl Oxide and its Isomers - Angelopoulou, Dimitra; Demetzos, Costas; Dimas, Costas; Perdetzoglou, Dimitrios; Loukis, Anargyros (Planta Medica, 2001)