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Covariance estimation using high-frequency data: Sensitivities of estimation methods
Haugom, Erik; Lien, Gudbrand; Veka, Steinar; Westgaard, Sjur - In: Economic modelling 43 (2014), pp. 416-425
Persistent link: https://www.econbiz.de/10010503037
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Economies of scope and scale in the Norwegian electricity industry
Mydland, Ørjan; Kumbhakar, Subal; Lien, Gudbrand; … - In: Economic modelling 88 (2020), pp. 39-46
Persistent link: https://www.econbiz.de/10012416837
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Do subsidies matter in productivity and profitability changes?
Kumbhakar, Subal; Li, Mingyang; Lien, Gudbrand - In: Economic modelling 123 (2023), pp. 1-24
Persistent link: https://www.econbiz.de/10014462529