APA

Dewolf R. G., Ziff Energy Group, World Energy Congress (18th. : 2001 oct. 21-25 : Buenos Aires) & Ziff Energy Group.Innovative regulatory regime in a competitive energy environment. : .

Chicago

Dewolf Richard G.C, Ziff Energy Group, World Energy Congress (18th. : 2001 oct. 21-25 : Buenos Aires) and Ziff Energy Group.Innovative regulatory regime in a competitive energy environment. : .

Harvard

Dewolf R. G., Ziff Energy Group, World Energy Congress (18th. : 2001 oct. 21-25 : Buenos Aires) and Ziff Energy Group.Innovative regulatory regime in a competitive energy environment. : .

MLA

Dewolf Richard G.C, Ziff Energy Group, World Energy Congress (18th. : 2001 oct. 21-25 : Buenos Aires) and Ziff Energy Group.: . .