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Estimation of technical inefficiency effects using panel data and doubly heteroscedastic stochastic production frontiers
Hadri, K., (2003)
Doubly Heteroscedastic Stochastic Production Frontiers with an English Cere al Farms.
Hadri, K., (1998)
Doubly heteroscedastic stochastic production frontiers with an application to English cereal farms
Hadri, Kaddour, (1999)