1. Mayor F. Science and power: today and tomorrow. InScience and Power(Hawkes N. (ed.)). UNESCO, Paris, 1995, pp. 137?169.
2. Ayibotele N. B. and Falkenmark M. Freshwater resources. InAn Agenda of Science for Environment and Development into the 21st Century(Dooge J. C. I., Goodman G. T., La Riviere J. W. M., Morton-Lefevre J., O'Riordan T. and Praderie F. (eds)) Cambridge University Press, Cambridge, 1992, pp. 187?203.
3. Shiklomanov I. A. Comprehensive Assessment of the Fresh-water Resources of the World, Stockholm Environmental Institute, 1997.
4. Young G. J., Dooge J. C. I. and Rodda J.Global Water Resource Issues. Cambridge University Press, Cambridge, 1994.
5. White G. F., Bradley D. J. and White A. U.Drawers of Water. Domestic water use in East AfricaUniversity of Chicago Press, Chicago, 1972.