1. Geographic Perspectives on Urban Systems;Berry,1970
2. Selected spatial variables and central business district retail sales;Boyce;Papers Proc. Reg. Sci. Asoc.,1963
3. A quarter century of downtown decline — the case of CBD retail sales in American cities: 1948–1972;Boyce;Paper presented at the Western Meetings of the Regional Science Association, Tucson,1977
4. The changing role of Downtown;Brodsky,1982
5. The effect of population change on the retail structure of the metropolitan community;Casparis,1965