Finley, A.O., Banerjee, S. and Carlin, B. P. 2007. spBayes: An R Package for Univariate and Multivariate Hierarchical Point-referenced Spatial Models. Journal of Statistical Software. 19, 4 (Apr. 2007), 1–24. DOI:https://doi.org/10.18637/jss.v019.i04.