1. Report No: 2/2011. Report on the accident to Aerospatiale (Eurocopter) AS332 L2 Super Puma, registration G-REDL, 11 nm NE of Peterhead, Scotland on 1 April 2009,2011
2. Report on the air accident near Turøy, Øygarden municipality, Hordaland county, Norway 29 April 2016 with Airbus Helicopters EC 225 LP, LN-OJF, operated by CHC Helikopter Service AS
3. Helicopter Main Gearbox Planet Gear Crack Propagation Test Dataset;Wang
4. Spiral bevel gear damage detection using decision fusion analysis
5. Planetary Gearbox Fault Detection Using Vibration Separation Techniques;Lewicki