Gemper, Bodo B. - In: Intereconomics : review of European economic policy 9 (1974) 10, pp. 313-317
The integration of national economies of a different level of development and an opposite quality of system will have a … more profound influence in shaping the world of tomorrow. Therefore a theory of economic integration must be formulated … which transcends the existing systems, i.e. a theory of co-integration. …