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”.
References:
Thörnqvist, T. 1993. Juvenile wood in coniferous trees. Swedish Council for Building Research. Document D13: 1993, Stockholm. 109 p. ISBN 91-540-5605-5.
Cown, D.J. 1999. New Zealand pine and Douglas-fir — Suitability for processing. Forest Research Bulletin 2/6. Rotorua, New Zealand. 72 p. ISSN 1174-5096.
Panshin, A. J., de Zeeuw, C. 1980. Textbook of Wood Technology. McGraw-Hill, New York, pp. 62, 105, 107, 163, 243. ISBN 0-07-048441-4.
Timell, T. E. 1986. Compression wood in gymnosperms, vol. 1-3. Springer-Verlag, Berlin. 2150 p. ISBN 3540157158. ISBN 978-3540157151.
