1. The Shift-Share Analysis;Ashby;Southern Econ. J.,1968
2. Analyse regionale-structurele et planification regionale;Beaud;Revue Econ.,1966
3. Interdependence of spatial structure and spatial behaviour;Berry;Papers and Proceedings, Regional Science Association,1968
4. Hierarchical diffusion: the basis of development filtering and spread in a system of growth centres;Berry,1971