1. ASTM (2011) Annual Book of ASTM Standards. Section Four, Construction. Vol 04.10. Wood. ASTM, West Conshohocken
2. Baño V, Moya L, O´Neill H, Cardoso A, Cagno M, Cetrangolo G, Domenech L (2016) Technical documents for standardization of timber structures and buildings. (ISBN 978-9974-0-1344-5)
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4. CEN EN 1310 (1997) Round and sawn timber. Method of measurement of features. CEN. European Committee for Standardization, Brussels
5. CEN EN 14081-1 (2016) Timber structures—strength graded structural timber with rectangular cross section—Part 1: General requirements. CEN, European Committee for Standardization, Brussels