1. 1) H. Miyajima, “Growth and wood quality of Aodamo grown in Hidaka district, Hokkaido”, Research Bulletin of the Hokkaido University Forests, Vol. 36, pp. 421-450 (1979).
2. 2) G. Muto and A. Koizumi, “Mechanical properties of aodamo, white ash, and sugar maple as baseball bats”, Research Bulletin of the Hokkaido University Forests, Vol. 64, pp.113-122 (2007).
3. 3) D.E. Kretschmann, J.J. Bridwell and T.C. Nelson, “Effect of changing slope of grain on ash, maple, and yellow birch bending strength”, Proceedings of the 11st World Conference on Timber Engineering, 2010.
4. 4) H. Yamazaki and T. Yoshida, “Various scarification treatments produce the different regeneration potentials for trees and forbs through changing soil properties”, Journal of Forest Research, Vol. 25, pp. 41-50 (2020).
5. 5) H. Osaki, S. Murakami and H. Akitsu, “The timber properties of Birch grown in a plantation in Atsuma, Hokkaido”, Mokuzai Gakkaishi, Vol. 65, pp.189-194 (2019).