1. Boulvert, Y., 1983. Carte pedologique de la Republique Centrafricaine, a 1:1,000,000. Notice explicative #100. ORSTOM, Paris, p. 126
2. Boulvert, Y., 1986. Republique Centrafricaine. Carte phytogeographique a 1:1,000,000. Notice explicative # 104. ORSTOM, Paris, p. 131
3. Proposal for the creation of an environment trust fund for Dzanga–Sangha;Blom,1996
4. Ten years Dzanga–Sangha Project: 1988–1999;Blom,1999
5. Assessment of biological priorities for conservation in the Guinean–Congolian Forest Region;Blom,2001