1. Central Statistical Agency (2003–2011) Ethiopian agricultural sample enumeration: statistical reports on report on land utilization: private peasant holdings from 2003 to 2011. Central Statistical Agency, Addis Ababa
2. Demekech G, Moges F, Zeleke G, Tesfaye K, Ayalew M (2010) Multi-stakeholder linkages in rural innovation processes in the Amhara Region, Ethiopia, Working document series 137. International Centre for Development-oriented Research in Agriculture, University of Bahir Dar, Amhara Region Agricultural Research Institute and Bureau of Agriculture and Rural Development, Wageningen/Bahir Dar
3. FDRE (The Federal Democratic Republic of Ethiopia) (1999) Agricultural research and training project: Ethiopian research—Extension-farmer linkages strategy, vol I. FDRE, Addis Ababa
4. Havelock RG (1986) Linkage: a key to understanding the knowledge system. In: Beal GM, Dissanayake W, Konoshima S (eds) Knowledge generation, exchange and utilisation. Westview Press, Boulder
5. Kassa B (2008) Agriculturalresearch and extension linkages in Ethiopia: a historical survey. Haromaya University, Dire Dawa