1. J.G. Adam, Museum National d’Histoire Naturelle, ed. Paris Ve tome 4, 335–347 (1971)
2. S.A. Ampofo, P.G. Waterman, Xanthones from three Garcinia species. Phytochemistry 25(10), 2351–2355 (1986)
3. M.N. Guedje, R. Fankap, B.A. Nkongmenek, Scr Bot Belgica 20, 37–38 (2000)
4. J. Ngoupayou, D.T. Noungoue, B.T. Lenta, K.T. Tabopda, S.N. Khan, S. Ngouela, Nat. Prod. Commun. 2, 1141–1144 (2007)
5. J. Ngoupayou, K.T. Tabopda, K.T. Ali, E. Tsamo, Chem. Pharm. Bull. 56, 1466–1469 (2008)