1. Principal component analysis;Abdi;Wiley Interdisciplinary Rev.: Comput. Statist.,2010
2. Information theory as an extension of the maximum likelihood principle;Akaike,1973
3. Baillie, M.G.L., 2012. Tree-ring chronologies present us with independent records of past natural events which, strangely, or perhaps not so strangely, seem to link with some stories from myth. In Kalendarische,Chronologische und Astronomische Aspekte der Vergangenheit; Krojer, F., Starke, R., Eds.; Differenz-Verlag:München, Germany, 2012; pp. 109–129.
4. Chapter 1: frost resistance and the distribution of conifers;Bannister,2001
5. Bates, D.M., 2010. lme4: Mixed-effects modeling with R. Springer, 131 pp.