1. Nitrogen productivity of photosynthesis minus respiration to calculate plant growth;Ågren;Oikos,1996
2. Statistix 1.0 System [Computer Program];Analytical Software Inc.,1996
3. Anon., 2001. Hyvän metsänhoidon suositukset. Metsätalouden kehittämiskeskus Tapio. Helsinki, Finland. [Recommendations for good silviculture] (in Finnish).
4. The Principles of Forest Yield Study: Studies in the Organic Production, Structure, Increment and Yield of Forest Stands;Assmann,1970
5. Bartelink, H.H., 1998. Simulation of growth and competition in mixed stands of Douglas-fir and beech. Ph.D. Thesis, Wageningen Agricultural University, Wageningen, The Netherlands.