文档介绍：DEECONOMIST135,,*IINTRODUCTIONTheissueofwhatdeterminescountries'-equationmodelsfocussingonsubstitutionofde-monpractisetherebyistoconcentrateonthecalculationoftheelasticityofsubstitutionbetweentwoexporters(petitors)inathirdmarket,,however,-equationmodelsthere-(startingfromOrcutt,1950);however,theoreticaldoubtshavebeenex-,-tionofsupplyfactors,theincorporationofnon-pricefactors,andtheimpac~--erthelessTyszynski(1951)positionofex-petitivenessonexportperformance;othersfollowed,butthepre-(1967),,bothdirectlyandviathe(other)factorsdeterminingtheexports,-,monthattworegionsofdestinationaredistinguished,enablinganalysisoftheimpactofthe(positionoftheexportsontherela-tiveexportperformance.*UniversityofGroningen,-tiveexportperformanceofcountries,wewillstartfromthesimplewell-knownsubstitution-of--cussedwithrelationtothebalanceofpayments,:q2