3Inter-Agency Task force, Manual on Statistics of International Trade in Services, "Acknowledgements".
4Inter-Agency Task force, Manual on Statistics of International Trade in Services, "Ⅰ. Foundations for the Manual General Introduction and Overview".
5Inter-Agency Task force, Manual on Statistics of International Trade in Services, "Ⅱ. Conceptual Framework for the Development of Stahstics on International trade in Services".
6联合国经济社会理事会文件E/CN.3/2001/10。
7Inter-Agency Task force, Manual on Statistics of International Trade in Services, "Ⅳ. Foreign Affiliates Trade in Services statistics".
9Carlsson,B.,and Ohlsson,L.(1976):structure determinant sof Swedish foreign trade:a test of conventional wisdom[J].European Economic Review 7 (6):34-35.