[1] TOBLER W. On the first law of geography: A reply[D]. Annals of the Association of American Geographers, 94, 304-310(2004).

[3] DERUDDER B, TAYLOR P J. World city network: A global urban analysis[D]. International Social Science Journal, 31, 641-642(2007).

[4] CASTELLS M. The Rise of the Network Society[D]. London: Blackwell Publishers(1996).

[6] VERBRUGGEN R, TAYLOR P J, HOYLER M. External urban relational process: Introducing central flow theory to complement central place theory[D]. Urban Studies, 47, 2803-2818(2010).

[7] MEIJERS E. From central place to network model: Theory and evidence of a paradigm change[D]. Tijdschrift Voor Econom-ische en Sociale Geografie, 98, 245-259(2010).

[8] KRATKE S. How manufacturing industries connect cities across the world: Extending research on "multiple globalizations"[D]. Global Networks, 14, 121-147(2014).

[10] WHEELER J O, MITCHELSON R L. The flow of information in a global economy: The role of the American urban system in 1990[D]. Annals of the Association of American Geographers, 84, 87-107(1994).

[35] ANSELIN L. Local indicators of spatial association: LISA[D]. Geographical Analysis, 27, 93-115(1995).

[36] DERUDDER B, HANSSENS H, WITLOX S V A F. Assessing the functional polycentricity of the Mega city region of Central Belgium based on advanced producer service transaction Links[D]. Regional Studies, 4848, 1939-1953(2013).

[37] ANSELIN L. Spatial Econometrics: Methods and Models[D]. Berlin: Springer Netherlands(2013).

[38] BLONIGEN B A, FIGLIO D N. The effects of foreign direct investment on local communities[D]. Journal of Urban Econ-omics, 48, 338-363(2000).