1. Lone eagles and high fliers in rural producer services;Beyers;Rural Development Perspectives,1996
2. Bivand , R. 2010 The “spdep” R package: spatial dependence, weighting schemes, statistics and models http://CRAN.R-project.org/package=spdep
3. Spatial patterns in the economic development of the Mountain West;Booth;Growth and Change,1999
4. An analysis of transformations (with discussion);Box;Journal of the Royal Statistical Society,1964