Davies, Tilman M., Martin L. Hazelton, and Jonathan. C Marshall. “Sparr: Analyzing Spatial Relative Risk Using Fixed and Adaptive Kernel Density Estimation in R”. Journal of Statistical Software 39, no. 1 (March 1, 2011): 1–14. Accessed November 21, 2024. https://www.jstatsoft.org/index.php/jss/article/view/v039i01.