KRUECKEBERG, D.A. & A.L. SILVERS (1974) Urban Planning Analysis: Methods and Models. NY: John Wiley & Sons.
OPPENHEIM, N. (1980) Applied Models in Urban & Regional Analysis.
REILLY, W.J. (1929) Methods for the study of retail
relationships.
STEWART, J.Q. (1947) Empirical mathematical rules concerning the distribution and equilibrium of population. Geographical Review, 37, 461-485.
© 1996 A.J.Filipovitch
Revised 11 March 2005