Author: W. R. Tobler
Waldo Tobler (born 1930) is an American-Swiss geographer and cartographer. Tobler's idea that "Everything is related to everything else, but near things are more related to each other" is referred to as the "first law of geography". Dr. Tobler is a Professor Emeritus at the University of California, Santa Barbara Department of Geography.
Tobler, W. R. (1973): A continuous transformation useful for districting. In Annals of the New York Academy of Sciences, 219 (0) pp. 215–220. https://onlinelibrary.wiley.com/doi/10.1111/j.1749-6632.1973.tb41401.x/abstract