1. Aubreville, A. 1967. Les étranges mosaiques forêt-savane du sommet de la boucle de l’Ogooué au Gabon. Adansonia Serie 2,7: 13-22.
2. Berg, C. C., Hijman, M. E. E. & Weerdenburg, J. C. A. (1984) Moracées. Flore du Gabon, 26. Muséum National d ’Histoire Naturelle, Paris.
3. Breteler, E J. 1990. Gabon’s evergreen forest: The present status and its future. Proceedings of the Twelth Plenary Meeting of AETFAT: 219-224.
4. Breteler, E J. In press. Novitates gabonenses 16. Dialium lopense, a new Leguminosae-Caesalpinoideae from central Gabon. Bull. Plantent. Belg.
5. Carroll, R. W. 1986. Status of the lowland gorilla and other wildlife in -the Dzanga-Sangha region of southwestern Central African Republic. Primate Conservation 7: 38-41.