Guidugli O S
Popul Geogr. 1990 Jun-Dec;12(1-2):69-84.
"This paper identifies the process of the differential concentration of population in urban areas....[Data for the state of Sao Paulo, Brazil, have] been subjected to an ambiguous model of development. This model is reflected in the pattern of population distribution."
本文确定了城市地区人口差异集中的过程……[巴西圣保罗州的数据]经历了一种模糊的发展模式。这种模式反映在人口分布格局中。