Breteler, F.J. 2008. NOVITATES GABONENSES 68. THE GENUS CASSIPOUREA (RHIZOPHORACEAE) IN CONTINENTAL TROPICAL AFRICA WITH EMPHASIS ON GABON: SUBGENERIC DIVISION, IDENTIFICATION KEYS, AND DESCRIPTION OF TWO NEW SPECIES. Edinburgh Journal of Botany. 65, 3 (Oct. 2008), 407–424. DOI:https://doi.org/10.1017/S0960428608005040.