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Generalized stochastic frontier production models
Löthgren, Mickael - In: Economics letters 57 (1997) 3, pp. 255-259
Persistent link: https://www.econbiz.de/10001231516
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On the power and interpretation of panel unit root tests
Karlsson, Sune; Löthgren, Mickael - In: Economics letters 66 (2000) 3, pp. 249-255
Persistent link: https://www.econbiz.de/10001448883