Integrating Gravity: The Role of Scale Invariance in Gravity Models of Spatial Interactions and Trade
This paper revisits the ubiquitous bi-proportional gravity model and investigates the reasons why different theoretical frameworks may lead to the same empirical formula. The generic gravity equation possesses scale invariance symmetries that const...
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| Format: | Policy Research Working Paper |
| Language: | English en_US |
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World Bank, Washington, DC
2013
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| Online Access: | http://documents.worldbank.org/curated/en/2013/01/17206376/integrating-gravity-role-scale-invariance-gravity-models-spatial-interactions-trade http://hdl.handle.net/10986/13161 |