1. Barwell, I., 1996. Transport and the Village: Findings from African Village-Level Travel and Transport Surveys and Related Studies. World Bank Discussion Paper No. 344. The World Bank, Washington, DC
2. The Land-Use/Transportation System;Blunden,1984
3. Rural road appraisal methods for developing countries. SR-395;Bovill,1978
4. Bryceson, D.F., Howe, J., 1992. African rural household and transport: Reducing the burden on women. IHE Working Paper IP-2, International Institute for Infrastructural, Hydraulic and Environmental Engineering, The Netherlands
5. Transportation, Temporal, and Spatial Components of Accessibility;Burns,1979