1. Bivand, R. and Yu, D. (2009) spgwr: Geographically Weighted Regression, http://www.r-project.org (Accessed 5 February 2009).
2. Clutter, J. L., Fortson, J. C., Pienaar, L. V., Brister, G. H. and Bailey, R.L. (1988) Timber Management: A Quantitative Approach, John Wiley & Sons, 333p.
3. Draper, N. R. and Smith, H. (1998) Applied Regression Analysis, John Wiley & Sons, 706p.
4. Fang, J., Wang, G. G., Liu, G. and Xu, S. (1998) Forest biomass of China: an estimate based on the biomass-volume relationship, Ecol. Appl. 8: 1084–1091.
5. Fotheringham, A. S., Brunsdon, C. and Charlton, M. (2002) Geographically Weighted Regression: the Analysis of Spatially Varying Relationships, John Wiley & Sons, 269p.