Breteler, F. J. 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 J. Bot. 2008, 65 (3), 407-424. https://doi.org/10.1017/S0960428608005040.