Crémer, Jacques and
Martin L. Weitzman,
"OPEC and the Monopoly Price of Oil",
European Economic Review Half Century Journal Issue, Gerard A. Pfann, Zvi Eckstein, Esther Gal-Or, Thorvaldur Gylfason and Juergen von Hagen (eds.) (2), Elsevier, Amsterdam, 2007, p. 94-103.