MAP20080027018 Holt, Andrew Energy and commodity rankings 2008 / Andrew Holt, Ryan Davidson, Xiao-Long Chen En: Risk : risk management, derivatives, structured products. - Southwick, West Sussex : Incisive Financial Publishing, 2007- = ISSN 0952-8776. - 01/02/2008 Tomo 21 Número 2 - 2008 I. Davidson, Ryan . II. Chen, Xiao-Long . III. Título.