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| 2012, Vol. 1(4): 51-55 DOI: | ||
| Economies of Scale, Heterogeneous Productivity and Internationalization——An Extension Study of Krugman Model | ||
| ZHANG Sheng-yong | ||
| Dongbei University of Finace and Economics, Dalian 116025, China | ||
| Received 2011-03-17 Revised 2012-07-11 | ||
| Supporting info | ||
| null | ||
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