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Estimation of panel model with heteroskedasticity in both idiosyncratic and individual specific errors
Zhang, Ruohao; Kumbhakar, Subal; Lai, Hung-pin - In: Econometric reviews 40 (2021) 4, pp. 415-432
Persistent link: https://www.econbiz.de/10012515607
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Nonparametric estimation of the determinants of inefficiency
Parmeter, Christopher F.; Wang, Hung-jen; Kumbhakar, Subal - In: Journal of productivity analysis 47 (2017) 3, pp. 205-221
Persistent link: https://www.econbiz.de/10011878362