R. -adeyemo, J. T. Oke, and A. A. Akinola, Economic efficiency of small scale farmers in Ogun State, Nigeria. Tropicultura, vol.28, issue.2, pp.84-88, 2010.

-. , M. Flinn, and J. C. , Profit efficiency among Basmati rice producers in Pakistan Punjab, American Journal of Agricultural Economics, vol.71, pp.303-310, 1989.

-. and C. B. , On price risk and the inverse farm size productivity relationship, Journal of Development Economics, vol.51, issue.2, pp.193-216, 1996.

G. E. -battese and T. Coelli, A model for technical inefficiency effects in a stochastic frontier production function for panel data, Empirical Economics, vol.13, issue.2, pp.325-332, 1995.
DOI : 10.1007/BF01205442

G. E. -battese, S. J. Malik, and M. A. Gill, AN INVESTIGATION OF TECHNICAL INEFFICIENCIES OF PRODUCTION OF WHEAT FARMERS IN FOUR DISTRICTS OF PAKISTAN, Journal of Agricultural Economics, vol.1, issue.1-4, pp.37-49, 1996.
DOI : 10.1111/j.1477-9552.1996.tb00670.x

R. A. -berry and W. Cline, Agrarian Structure and Productivity in Developing Countries, 1979.

T. -besley, Property Rights and Investment Incentives: Theory and Evidence from Ghana, Journal of Political Economy, vol.103, issue.5, pp.903-937, 1995.
DOI : 10.1086/262008

R. -bhandari, Searching for a Weapon of Mass Production in Nepal, Journal of Developing Societies, vol.35, issue.4, pp.111-143, 2006.
DOI : 10.1086/451622

B. E. -bravo-ureta and A. E. Pinheiro, Efficiency Analysis of Developing Country Agriculture: A Review of the Frontier Function Literature, Agricultural and Resource Economics Review, vol.5, issue.01, pp.88-101, 1993.
DOI : 10.1016/0304-4076(77)90052-5

F. -bultot, Cartes des régions climatiques du Congo belge établies d'après les critères de KOPPEN, 1950.

T. J. -coelli, A guide to DEAP version 2.1: A Data Envelopment Analysis (Computer program) Working Papers 8/96, 1980.

-. Moulin, L. Kalombo, and T. , Atlas de l'Organisation Administrative de la RDC, 2005.

-. Moulin, L. Kalombo, and T. , Atlas de l'Organisation Administrative de la RDC, 2005.

A. B. -deolalikar, The Inverse Relationship between Productivity and Farm Size: A Test Using Regional Data from India, American Journal of Agricultural Economics, vol.63, issue.2, pp.275-279, 1981.
DOI : 10.2307/1239565

H. O. -edeh and M. U. Awoke, Technical efficiency analysis of improved cassava farmers in Abakaliki local government area of EbonyiState: A stochastic frontier approach, Agricultural Journal, vol.4, issue.4, pp.171-174, 2009.

S. -fan and C. Chan-kang, Is small beautiful? Farm size, productivity, and poverty in Asian agriculture, Agricultural Economics, vol.14, issue.4, pp.135-146, 2005.
DOI : 10.1596/0-8213-5088-9

G. -feder and A. Nishio, The benefits of land registration and titling: Economic and social perspectives, Land Use Policy, vol.15, issue.1, pp.143-69, 1999.

S. -gavian and M. Fafchamps, Land Tenure and Allocative Efficiency in Niger, American Journal of Agricultural Economics, vol.78, issue.2, pp.460-71, 1996.
DOI : 10.2307/1243717

O. R. -iheke, Technical efficiency of cassava farmers in South Eastern Nigeria: A stochastic frontier approach, Agricultural Journal, vol.3, issue.2, pp.152-156, 2008.

O. R. -iheke, Technical efficiency of cassava farmers in South Eastern Nigeria: A stochastic frontier approach, Agricultural Journal, vol.3, issue.2, pp.152-156, 2008.

H. G. -jacoby and B. Minten, Is Land Titling in Sub-Saharan Africa Cost-Effective? Evidence from Madagascar, The World Bank Economic Review, vol.74, issue.3, pp.461-485, 2007.
DOI : 10.2307/3147118

M. -mutamba, , 1989.

M. B. -nsombo and . Congo, Utilisation actuelle des terres dans le rayon du centre d, 2005.

M. C. -ogboma, G. N. Asumugha, H. N. Anyaegbunam, B. C. Okoye, J. Onwumere et al., Resource use efficiency in cassava processing in two selected areas of Abia State, Nigeria. Pakistan Journal of social sciences, vol.4, issue.6, pp.778-781, 2007.

K. -ogundari and S. Ojo, An Examination of technical, economic and allocative efficiency of small farmers: the case study of cassava farmers in Osun State of Nigeria, Bulgarian Journal of Agricultural Sciences, vol.13, pp.185-195, 2007.