共 5 条
[3]
Geographic Concentration in U.S. Manufacturing Industries: A Dartboard Approach[J] . Glenn Ellison,Edward L. Glaeser.Journal of Political Economy . 1997 (5)
[4]
The nordic countries: High quality service in a low density environment[J] . S. Illeris,P. Sjoholt.Progress in Planning . 1995 (2)