//-->
Some spatial characteristics of Iowa's dispersed farm population and their implications for the grouping of central place functions
Golledge, R. G., (1966)
Banking functions as an index of inter-city relations
Lieberson, Stanley, (1962)
Clustering of services in central places
Bell, Thomas L., (1974)
Optimizing the size and locations of facilities in competitve multi-site service systems
Zhang, Lixun, (2008)
The p-median problem with maximum distance constraints : a comment
Hillsman, Edward L., (1975)
Behavioral correlates of urban spatial structure
Rushton, Gerard, (1971)