1. Atlas of Finland, 1990. Geology (English text in Appendix 123–126). National Board of Survey, Geographical Society of Finland, 58 pp.
2. Ueber waldtypen (in German only);Cajander;Acta For. Fenn.,1909
3. Forest types and their significance;Cajander;Acta For. Fenn.,1949
4. Site index curve for upland oaks in the Central States;Carmean;For. Sci.,1972
5. Dixon, W.J. (Ed.), 1992. BMDP Statistical Software Manual, Vol. 1 and 2. University of California Press, Berkeley, CA, 1500 pp.