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Hecht, Brent; Moxley, Emily (2009). "Terabytes of Tobler: Evaluating the First Law in a Massive, Domain-Neutral Representation of World Knowledge". Spatial Information Theory 9th International Conference, COSIT 2009, Aber Wrac'h, France, September 21–25, 2009, Proceedings. Lecture Notes in Computer Science. Vol. 5756. Springer. p. 88. Bibcode:2009LNCS.5756...88H. doi:10.1007/978-3-642-03832-7_6. ISBN978-3-642-03831-0.
Tobler, Waldo (1999). "Linear pycnophylactic reallocation comment on a paper by D. Martin". International Journal of Geographical Information Science. 13 (1): 85–90. Bibcode:1999IJGIS..13...85T. doi:10.1080/136588199241472.
Goodchild, Michael (2004). "The Validity and Usefulness of Laws in Geographic Information Science and Geography". Annals of the Association of American Geographers. 94 (2): 300–303. doi:10.1111/j.1467-8306.2004.09402008.x. S2CID17912938.
Walker, Robert Toovey (28 Apr 2021). "Geography, Von Thünen, and Tobler's first law: Tracing the evolution of a concept". Geographical Review. 112 (4): 591–607. doi:10.1080/00167428.2021.1906670. S2CID233620037.