Ahmed B, Haji J, Geta E (2012). Analysis of farm households' technical efficiency in production of smallholder farmers: The case of Girawa District, Ethiopia. Am. Eur. J. Agric. Environ. Sci. 13:1615-1621.

Aigner D, Lovell CAK, Schmidt P (1977). Formulation and estimation of stochastic production function models. J. Economet. 6:21-37.
Crossref

Alemu T, Emana B, Haji J, Legesse B (2014). Smallholder Wheat Production Efficiency in Selected Agro-ecological zones of Ethiopia: A Parametric Approach. J. Econ. Sustain. Dev. 15:155-163.

Beshir H, Emana B, Kassa B, Haji J (2012). Economic efficiency of mixed crop-livestock production system in the North eastern highlands of Ethiopia: the stochastic frontier approach. J. Agric. Econ. Dev. 1:10-20.

Bogale T, Bogale A (2005). Technical efficiency of resource use in the production of Irrigated potato. A study of farmers using modern and traditional irrigation schemes in Awi Zone, Ethiopia. J. Agric. Rural Dev. Trop. Subtrop. 106:59-70.

Charnes A, Cooper WW, Rhodes E (1978). Measuring the efficiency of decision making units, Eur. J. Oper. Res. 2:429-444.
Crossref

Coelli TJ, Prasada Rao DS, O'Donnel CJ, Battese GE (2005. An introduction to efficiency and productivity analysis second edition. Springer, new Yprk. NY. Coelli TJ (1996). A guide to frontier version 4.1: a computer program for stochastic frontier production and cost functions estimation, mimeo, department of econometrics, university of new England, Armidale.

CSA (Central Statistical Agency) (2010). Report on Area and Production of major crops (private peasant holdings, belg season): Agricultural sample survey, 4(446). Addis Ababa, Ethiopia.

CSA (Central Statistical Agency) (2011). Report on Area and Production of major crops (private peasant holdings, Meher season): Agricultural sample survey, 1(x). Addis Ababa, Ethiopia.

CSA (Central Statistical Agency) (2012). Report on Area and Production of major crops (private peasant holdings, Meher season): Agricultural sample survey, 1(x). Addis Ababa, Ethiopia.

CSA (Central Statistical Agency) (2013). Report on Area and Production of major crops (private peasant holdings, Meher season): Agricultural sample survey, 3(x). Addis Ababa, Ethiopia.

CSA (Central Statistical Agency) (2014). Report on Area and Production of major crops (private peasant holdings, Meher season): Agricultural sample survey, 1(532). Addis Ababa, Ethiopia.

CSA (Central Statistical Agency) (2015). Report on Area and Production of major crops (private peasant holdings, Meher season): Agricultural sample survey, 1(278). Addis Ababa, Ethiopia.

CSA (Central Statistical Agency) (2016). Report on Area and Production of major crops (private peasant holdings, Belg season): Agricultural sample survey, Addis Ababa, Ethiopia 5(578).

Debebe S, Haji J, Goshu D, Edriss KA (2015). Technical, allocative, and economic efficiency among smallholder maize farmers in Southwestern Ethiopia: Parametric approach. J. Dev. Agric. Econ. 7:282-291.
Crossref

Demelash N (2013). Deficit irrigation scheduling for potato production in North Gondar, Ethiopia. Afr. J. Agric. Res. 8:1144-1154.
Crossref

Farrell MJ (1957). The measurement of productive efficiency. J. Royal Stat. Soc. 120:253-290.
Crossref

Geta E, Bogale A, Kassa B, Elias E (2013). Productivity and efficiency analysis of smallholder maize producers in Southern Ethiopia. J. Hum. Ecol. 41:67-75.

Gildemacher PR, Kaguongo W, Tesfaye A, Weldegiorgis G, Wagoire WW, Kakuhenzire R, Kinyae PM, Nyongesa M, Struik PC, Leeuwis C (2009). Improving potato production in Kenya, Uganda and Ethiopia. A system diagnosis. Potato Res. 52:173-205. Springer
Crossref

Jema H, Andersson H (2006). Determinants of efficiency of vegetable production in smallholder farms: The Case of Ethiopia. Food Econ. 3:125-137.

Kodde DA, Palm CF (1986). Wald criteria for jointly testing equality and inequality restrictions. Econometrica 54:1243-1248.
Crossref

Limenih B, Tefera T, Lahiff E (2009). Determinants of Adoption of improved potato varieties in Welmera Woreda. In Weldegiorgis G, Schulz S, Berihun B (Eds.), Seed potato tuber production and dissemination, Experiences and Challenges and Prospects. Proceedings of the national workshop on seed potato production and dissemination, 12-14 March 2012: 279- 298) Bahir Dar, Ethiopia.

Meeusen W, Broeck JV (1977). Efficiency estimation from Cobb-Douglas production functions with composed error. Int. Econ. Rev. 18:435-444.
Crossref

MoA (Ministry of Agriculture) (2014). Crop Variety Register. Plant Variety Release, Protection and seed quality control directorate. ISSU No. 16. Addis Ababa, Ethiopia.

Oumer MA, Tiruneh GW, Tizale YC (2014). Empowering smallholder farmers through participatory seed potato management: Lessons from Welmera District, Ethiopia. J. Sustain. Dev. 7:93-110.
Crossref

Tesfaye A, Weldegiorgis G, Kaguongo W, Lemaga B, Nigussie D (2013). Adoption and impact of potato production technologies in Oromia and Amhara regions. In Weldegiorgis G, Schulz S, Berihun B (Eds.), Seed potato tuber production and dissemination, Experiences and Challenges and Prospects. Proceedings of the national workshop on seed potato production and dissemination, 12-14 March 2012. Bahir Dar, Ethiopia. pp. 256-278.

Tiruneh GW, Geta E (2016). Technical Efficiency of Smallholder wheat farmers: The case of Welmera district, Central Oromia, Ethiopia. J. Dev. Agric. Econ. 8:39-51.
Crossref

Yami M, Solomon T, Begna B, Fufa F, Alemu T, Alemu D (2013). Sources of technical inefficiency of smallholder wheat farmers in selected water-logged areas of Ethiopia: A translog production function approach. Afr. J. Agric. Res. 8:3930-3940.

Yuya AB (2014). Comparative analysis of technical efficiency of smallholder irrigated and rain-fed farm production: The case of Girawa District, Oromia, Ethiopia. J. Agric. Econ. Ext. Rural Dev. 2:54-62.