1. An Introduction to Design and Behavior of Bolted Joints;Bickford,1995
2. Cockpit fire in boeing 757 from window heater, took 2 extinguishers to stop,2010
3. Loosening by vibration of threaded fastenings;Goodier;Mech. Eng.,1945
4. Bolts: how to prevent their loosening;Sauer;Mach. Des.,1950
5. Why bolts loosen;Gambrell;Mach. Des.,1968