World Health Organization. (1997). Tropical disease research: Progress 1995-96 : thirteenth programme report UNDP/World Bank/WHO Special Programme for Research and Training in Tropical Diseases (TDR). World Health Organization.

World Health Organization. Tropical Disease Research: Progress 1995-96 : Thirteenth Programme Report UNDP/World Bank/WHO Special Programme for Research and Training in Tropical Diseases (TDR). Geneva: World Health Organization, 1997.

World Health Organization. Tropical Disease Research: Progress 1995-96 : Thirteenth Programme Report UNDP/World Bank/WHO Special Programme for Research and Training in Tropical Diseases (TDR). World Health Organization, 1997.