Are there fundamental principles in Geographic Information Science?Dr. Francis J Harvey, Waldo Tobler, Nicholas R. Chrisman, Andrew U. Frank, Dan Sui, Michael F. Goodchild · First published 2012Open the Tome
Map projection transformationQihe H. Yang, Qihe Yang, John Snyder, Waldo Tobler · First published 1999Open the Tome
Numerical map generalization, and Notes on the analysis of geographical distributionsWaldo Rudolph Tobler · First published 1966Open the Tome
