Applied Spatial Data Analysis with R
Roger S. Bivand
[23, 25, 26] Wakefield, J. C., Kelsall, J. E., and Morris, S. E. (2000). Clustering, cluster detection and spatial variation in risk. In Elliott, P., Wakefield, J., Best, N., and Briggs, D., editors, Spatial Epidemiology: Methods and Applications, pages ...