1. Spatial patterns in the distribution of tropical tree species;Ashton;Science,2000
2. Spatstat: an r package for analyzing spatial point patterns;Baddeley;Spat. Stat.,2005
3. Measuring the power of hierarchical cluster analysis;Baker;Psychol. Bull.,1975
4. An examination of procedures for determining the number of clusters in a data set;Calinski;Commun. Stat.,1974
5. Nbclust: An r package for determining the relevant number of clusters in a data set;Charrad;Spat. Stat.,2014