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Endogeneity in stochastic frontier models : Copula approach without external instruments
Tran, Kien; Tsionas, Efthymios G. - In: Economics letters 133 (2015), pp. 85-88
Persistent link: https://www.econbiz.de/10011432003
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Estimating technical efficiency in micro panels
Feng, Qu; Horrace, William C. - In: Economics letters 117 (2012) 3, pp. 730-733
Persistent link: https://www.econbiz.de/10009680743
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Comparison of stochastic frontier models using the Hyvärinen factor
Tsionas, Efthymios G. - In: Economics letters 202 (2021), pp. 1-5
Persistent link: https://www.econbiz.de/10012607224
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Quantile stochastic frontier models with endogeneity
Tsionas, Efthymios G.; Assaf, A. Georges; … - In: Economics letters 188 (2020), pp. 1-5
Persistent link: https://www.econbiz.de/10012227857
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Directional technology distance functions through duality
Tsionas, Efthymios G. - In: Economics letters 190 (2020), pp. 1-5
Persistent link: https://www.econbiz.de/10012228175
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The profit function system with output- and input-specific technical efficiency
Tsionas, Efthymios G. - In: Economics letters 151 (2017), pp. 111-114
Persistent link: https://www.econbiz.de/10011742145
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On the estimation of zero-inefficiency stochastic frontier models with endogenous regressors
Tran, Kien C.; Tsionas, Efthymios G. - In: Economics letters 147 (2016), pp. 19-22
Persistent link: https://www.econbiz.de/10011619312
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Estimating the bias in technical change : a nonparametric approach
Hampf, Benjamin; Krüger, Jens - In: Economics letters 157 (2017), pp. 88-91
Persistent link: https://www.econbiz.de/10011847320