A. E. Elmendorf, Peters, D. H., Kandola, K., y Chellaraj, G.,
«Benchmarks for health expenditures, services and outcomes in Africa during the 1990s»,
Bulletin of the World Health Organization, pp. p. 761-769 : 5 tab., 2000.
C. A. van Wijk-Sijbesma, Baumann, E., Bhatia, R., Kolsky, P., y Chilton, J.,
«Learning from experience : evaluation of UNICEF's water and environmental sanitation programme in India, 1966-1998», vol. no. 01/04. UNICEF, New York, NY, USA, p. xxx, 76 p. + 234 p. annexes : 7 boxes, 7 fig., 6 tab., 2000.
W. Teplitz-Sembitzky,
«The use of renewable energies for seawater desalination : a brief assesment», vol. no. W16e. German Appropriate Technology Exchange (GATE) /Deutsche Gesellschaft für Technische Zusammenarbeit (GTZ), Eschborn, Germany, p. 8 p. : 3 tab., 2000.