By Keppo J.   Lu H.   in Energy Economics

ISSN:0140-9883|25|5|459-472

Elsevier‎(2003)‎

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By Vehvilainen I.   Keppo J.   in European Journal of Operational Research

ISSN:0377-2217|145|1|136-147

Elsevier‎(2003)‎

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By Keppo J.   Rasanen M.   in Energy Economics

ISSN:0140-9883|21|3|213-223

Elsevier‎(1999)‎

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By Alvarez L.H.R.   Keppo J.   in European Journal of Operational Research

ISSN:0377-2217|136|1|173-180

Elsevier‎(2002)‎

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