RM Assunção, MC Neves, G Câmara, and C da Costa Freitas. Efficient regionalization techniques for socio-economic geographical units using minimum spanning trees. International Journal of Geographical Information Science, 20(7):797–811, 2006. doi:10.1080/13658810600665111.


H Calik, M Labbé, and H Yaman. P-center problems. Location Science, pages 79–92, 2015. doi:10.1007/978-3-319-13111-5_4.


H Chen, AT Murray, and R Jiang. Open-source approaches for location cover models: capabilities and efficiency. Journal of Geographical Systems, 2021. doi:10.1007/s10109-021-00350-w.


Richard L. Church. Tobler's law and spatial optimization: why bakersfield? International Regional Science Review, 41(3):287–310, 2018. doi:10.1177/0160017616650612.


Richard L. Church and Alan T. Murray. Business Site Selection, Locational Analysis, and GIS. John Wiley & Sons, Inc., Hoboken, 2009.


RL Church and AT Murray. Location covering models: history, applications and advancements. Springer, 2018.


John Richard Current and James Edward Storbeck. Capacitated Covering Models. Environment and Planning B: Planning and Design, 15(2):153–163, 1988. doi:10.1068/b150153.


MS Daskin. Network and discrete location: models, algorithms, and applications. John Wiley & Sons, Inc., 2013.


MS Daskin and EH Stern. A hierarchical objective set covering model for emergency medical service vehicle deployment. Transportation Science, 1981. doi:10.1287/trsc.15.2.137.


JC Duque, L Anselin, and SJ Rey. The max-p-regions problem*. Journal of Regional Science, 52(3):397–419, 2012. doi:10.1111/j.1467-9787.2011.00743.x.


JC Duque, RL Church, and RS Middleton. The p-regions problem. Geographical Analysis, 43(1):104–126, 2011. doi:10.1111/j.1538-4632.2010.00810.x.


SL Hakimi. Optimum locations of switching centers and the absolute centers and medians of a graph. Operations Research, 12(3):450–459, 1964. doi:10.1287/opre.12.3.450.


SL Hakimi. Optimum distribution of switching centers in a communication network and some related graph theoretic problems. Operations Research, 13(3):462–475, 1965. doi:10.1287/opre.13.3.462.


MJ Kuby. Programming models for facility dispersion: the p-dispersion and maxisum dispersion problems. Geographical Analysis, 1987. doi:10.1111/j.1538-4632.1987.tb00133.x.


PJ Maliszewski, MJ Kuby, and MW Horner. A comparison of multi-objective spatial dispersion models for managing critical assets in urban areas. Computers, Environment and Urban Systems, 2012. doi:10.1016/j.compenvurbsys.2011.12.006.


S Openshaw. A geographical solution to scale and aggregation problems in region-building, partitioning and spatial modelling. Transactions of the Institute of British Geographers, pages 459–472, 1977.


S Openshaw and L Rao. Algorithms for reengineering 1991 census geography. Environment and Planning A, 27(3):425–446, 1995. doi:10.1068/a270425.


Jianbo Shi and J. Malik. Normalized cuts and image segmentation. IEEE Transactions on Pattern Analysis and Machine Intelligence, 22(8):888–905, 2000. doi:10.1109/34.868688.


Constantine Toregas, Ralph Swain, Charles Revelle, and Lawrence Bergman. The location of emergency service facilities. Operations Research, 19(6):1363–1373, 1971. doi:10.1287/opre.19.6.1363.


R Wei, SJ Rey, and E Knaap. Efficient regionalization for spatially explicit neighborhood delineation. International Journal of Geographical Information Science, pages 1–17, 2020. doi:10.1080/13658816.2020.1759806.


LJ Wolf. ljwolf/spenc: GISRUK. 2018. doi:10.5281/zenodo.1219904.


LJ Wolf. Spatially–encouraged spectral clustering: a technique for blending map typologies and regionalization. International Journal of Geographical Information Science, 0(0):1–18, 2021. doi:10.1080/13658816.2021.1934475.


Stella X. Yu and Jianbo Shi. Multiclass spectral clustering. In Proceedings Ninth IEEE International Conference on Computer Vision, volume 1, 313–319. 2003. doi:10.1109/ICCV.2003.1238361.


Ulrike von Luxburg. A tutorial on spectral clustering. Statistics and Computing, 17(4):395–416, 2007. doi:10.1007/s11222-007-9033-z.