Claessens, Stijn Pricing Average Price Options for the 1990 Mexican and Venezuelan Recapture Clauses by Stijn Claessens and Sweder Van Wijnbergen - Washington, D.C IBRD 1990 - 14p. - Working Papers WPS 541 . Subjects--Topical Terms: Petroleum products --Prices --Venezuela --Econometric modelsPetroleum products --Prices --Mexico --Econometric modelsDebt relief --Venezuela --Econometric modelsDebt relief --Mexico --Econometric models