Dumais G., Ellison G., Glaeser E. L. Geographic Concentration as a Dynamic Process. 10. The Review of Economics and Statistics, 1997, vol. 84, no. 2, pp. 193-204.
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G., D., G., E., L, G. E. (1997). Geographic Concentration as a Dynamic Process. 10. The Review of Economics and Statistics, 84(2), pp. 193-204.
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