1. Ministry of Land, Infrastructure, Transport and Tourism Announcement No. 1024 (2001) A matter that provides particular allowable strength and particular material strength (in Japanese)
2. Japanese Industrial Standard (1994) Methods of testing for woods (in Japanese). Japanese Industrial Association, Tokyo
3. ASTM D 245 (2006) Practice for establishing structural grades and related allowable properties for visually graded lumber. ASTM International, West Conshohocken, PA
4. Tsuchimoto T (2008) Compression perpendicular to the grain (in Japanese). Kenchiku Gijutsu 706:126
5. Bodig J, Jayne BA (1982) Mechanics of wood and wood composites. Van Nostrand Reinhold, New York, pp 293–296