1. “Scale-Dependence and Self-Similarity in Cartographic Lines”;Buttenfield;Cartographica,1989
2. “The Maximal Covering Problem”;Church;Papers of the Regional Science Association,1974
3. “Theoretical and Computational Links between the p-Median, Location Set-Covering, and the Maximal Covering Location Problem”;Church;Geographical Analysis,1976
4. “Some Comments on Numerical Line Generalization”;Cromley;Geographical Analysis,1988
5. DeVeau , T. 1985 “Reducing the Number of Points in a Plane Curve Representation” 152 60