@phdthesis{oai:tsukuba.repo.nii.ac.jp:00008431,
 author = {村山, 祐司 and Murayama, Yuji},
 month = {},
 note = {Commodities do not flow at random, but flow with stable spatial order. Namely, as the gravity model shows, there exists distinct correspondence between the distance from generated region to pulled region, and the quantity of the interregional commodity flows. Furthermore, there exists clear difference between the regional attributes of generated regions and those of pulled regions. The generated region is ..., 1987},
 school = {筑波大学, University of Tsukuba},
 title = {Regional structure of commodity flows in Japan : an application of dynamic geographical field theory},
 year = {1987}
}