1. ALSC (2014) List of approved machines. American Lumber Standard Committee, Germantown
http://www.alsc.org/untreated_machinegraded_mod.htm
. Accessed 14 March 2018
2. Bechtel FK (1985) Beam stiffness as a function of point-wise E, with application to machine stress rating. In: Proceedings of International Symposium on Forest Products Research, CSIR, Pretoria, South Africa. p 22–26
3. Blass HJ, Gard W (1994) Machine strength grading of timber. In: Proceedings of the Pacific Timber Engineering Conference, Gold Coast, Australia, 11˗15 July 1994
4. Boughton G (1994) Superior sorting of timber using localized stiffness on edge. In: Proceedings of the Pacific Timber Engineering Conference, Gold Coast, Australia, 11–15 July 1994
5. Brancheriau L, Paradis S, Baillères H (2007) Bing: beam identification by non-destructive grading (Cirad).
http://ur-biowooeb.cirad.fr/en/products/bing/what-is-it
. Accessed 6 September 2018.
https://doi.org/10.18167/62696E67