1. ASTM D198 (2009) Standard test methods of static tests of lumber in structural sizes. ASTM International, West Conshohocken, USA
2. Bacher M (2008) Comparison of different machine strength grading principles. In: COST E53 Conference 29th–30th October, Delft, The Netherlands, pp 183–193
3. Bogensperger Th, Schickhofer G, Unterwieser H (2006) The mechanical inconsistence in the evaluation of the modulus of elasticity according to EN384. CIB W18 Meeting 39, Florence, Italy. Paper 39-21-2
4. Boström L (1997) Measurement of modulus of elasticity in bending. CIB W18 Meeting 30, Vancouver, Canada. Paper 30-10-2
5. Boström L (1999) Determination of the modulus of elasticity in bending of structural timber—comparison of two methods. Holz Roh- Werkst 57(2):145–149