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- [9] Estimating the technical efficiency of health care systems: A cross-country comparison using the directional distance function[J] . Gang Cheng,Panagiotis D. Zervopoulos.European Journal of Operational Research . 2014 (3)
- [10] Institutional Environment and Technical Efficiency: A Stochastic Frontier Analysis of Cotton Producers in West Africa[J] . Veronique Theriault,Renata Serra.J Agric Econ . 2014 (2)