求三篇文献

[size=-1]
[size=-1]最近需要研究中心地理论，发现这几篇文献可能有用，可惜没有账号下载，有没有同学有的，谢谢啦~~~
[size=-1]P.M. Allen and M. Sanglier, Dynamic models of urban growth, J. social biol. Struct. 1 (1978), pp. 265–280. Abstract | Article | PDF (969 K) | View Record in Scopus | Cited By in Scopus (10)
P.M. Allen and M. Sanglier, A dynamic model of urban growth: II, J. social biol. Struct. 2 (1979), pp. 269–278. Abstract | Article | PDF (587 K) | View Record in Scopus | Cited By in Scopus (10)


A dynamic model of a central place system III. The effects of trade barriers
P.M. Allen and M. Sanglier

[size=-1]
[size=-1]最近需要研究中心地理论，发现这几篇文献可能有用，可惜没有账号下载，有没有同学有的，谢谢啦~~~
[size=-1]P.M. Allen and M. Sanglier, Dynamic models of urban growth, J. social biol. Struct. 1 (1978), pp. 265–280. Abstract | Article | PDF (969 K) | View Record in Scopus | Cited By in Scopus (10)
P.M. Allen and M. Sanglier, A dynamic model of urban growth: II, J. social biol. Struct. 2 (1979), pp. 269–278. Abstract | Article | PDF (587 K) | View Record in Scopus | Cited By in Scopus (10)

A dynamic model of a central place system III. The effects of trade barriers
P.M. Allen and M. Sanglier

i am sorry..

thanks~~~~