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2. Cooper, R. N., ‘Sliding Parities: A Proposal for Presumptive Rules,’ in: Halm (1970), pp. 257–259.
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4. European Economic Community,Rapport au conseil et à la commission concernant la réalisation par etapes de l'union economique et monétaire dans la communanté (Werner Report), Brussels, 1970.
5. Fleming, J. M.,Towards Assessing the Need for International Reserves, Essays in International Finance, no. 58, Princeton, 1967.