1. German national standard, DIN 25201-4:2010 Anhang B, Prüfvorschrift zum Nachweis der Losdrehsicherheit von gesicherten Schraubenverbindungen, 2010
2. P.R. Bonenberger, Fastening: The truth about TORQUE and TENSION, Assembly Magazine, Sept. 2001, available from http://www.assemblymag.com/articles/83789-fastening-the-truth-about-torque-and-tension
3. R. Friede, J. Lange, Self-loosening of prestressed bolts, in: Nordic Steel Construction Conference, Malmö, Sweden, Sept. 2009, available from http://www.nordicsteel2009.se/pdf/106.pdf
4. G.H. Junker, New criteria for self loosening of fasteners under vibration, SAE International Automotive Engineering Congress, Paper No. 690055, 1969, pp. 314–335
5. International standard ISO 16130:2015, Aerospace series – Dynamic testing of the locking behaviour of bolted connections under transverse loading conditions (vibration test), International standard organisation, 2015, available from https://www.iso.org/standard/55728.html