Density Gradients and Urban Growth

Casett, E. (1967). Urban Population Density Patterns: an Alternate Explanation. Canadian Geographer 11 96-100.

-. ( 1969). Alternate Population Density Models: an Analytical Comparison of their Validity Range. In Scott, A. J. , Studies in Regional Science. London , Pion 105-113.

Clark, C. (1967). Population Growth and Land Use. London, Macmillan.

Desk, D.R. and Yuill, R.S. (1967). A New Functional Urban Boundary? Professional Geographer 19(6) 330-335.

Levy, H. (1948). The Shops of Britain: a Study of Retail Distribution . London, Routledge and Kegan PauL

Meisch, A.T. and Connor, J.J. (1968). Stepwise Regression and Nonpolynomial Models in Trend Analysis. Computer Contribution 27. State Geological Survey: University of Kansas.

Muth, R.F. (1969). Cities and Housing. Chicago , University of Chicago Press.

Newling, B. (1969). The Spatial Variation of Urban Population Densities . Geographical Review 59(2) 242-252.

Nordbeck, S. (1965). The Law of Allometric Growth. Michigan Inter-University Community of Mathematical Geographers: Discussion Paper 7.