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Resource and Energy Economics > 2005 > 27 > 1 > 83-88
Economics Letters > 2004 > 83 > 2 > 165-171
Economics Letters > 2001 > 73 > 3 > 359-365
Journal of Banking and Finance > 1997 > 21 > 7 > 989-1016
Resource and Energy Economics > 2005 > 27 > 1 > 83-88
Economics Letters > 2004 > 83 > 2 > 165-171
Economics Letters > 2001 > 73 > 3 > 359-365
Journal of Banking and Finance > 1997 > 21 > 7 > 989-1016