1. Africa Pilot, 1963. Hydrographic Department, London, (11th ed.) 2: 1–454.
2. Circulation and selected properties of the Columbia river effluent at sea;Barnes,1972
3. The World water balance;Baumgartner,1975
4. Nutrient distribution in the Zaire estuary and river plume;Bennekom;Neth. J. Sea Res.,1978
5. Nutrients on and off the Guyana shel related to upwelling and Amazon outflow;Bennekom,1978