Erkki Verkasalo (Research Professor, LUKE) has modified and updated the text from the reference “Hakkila, P and Verkasalo, E. 2009. Structure and properties of wood and woody biomass. In: Kellomäki, S. (Ed.). Forest Resources and Sustainable Management. 2nd edition. Paper Engineers’ Association, Helsinki, Finland. pp. 133-215”.
Jordan, C.F., 1971. Productivity of tropical forest and its relation to a world pattern of energy storage. Journal of Ecology 59: 127–142. ISSN 0022-0477.
Kollman, F. 1951. Technologie des Holzes und der Holzwerkstoffe 1. Springer-Verlag, Berlin. 1050 p.
Hakkila, P., Parikka, M. 2002. Fuel resources from the forest. In: Richardson, J., Björheden, R., Hakkila, P., Lowe, A.T., Smith, C.T. (eds.). Bioenergy from sustainable forestry. Kluwer Academic publishers, pp. 19–48. ISBN 1-4020-0676-4.
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