1. Proceediings ICAF 2007;DAS,2007
2. Civil Aviation Accident and Incident Investigation Commission, Accident of aircraft Boeing 737-B, registration PH-TBC at Barcelona airport on 28 November 2004, Technical report No. A-070/2004, Civil Aviation Accident and Incident Investigation Commission, Madrid, 2004.
3. The Effect of Scratches and of Various Workshop Finishes Upon the Fatigue Strength of Steel;Thomas,1923
4. Surface finish of open holes on fatigue life
5. Effect of sliding friction on the fatigue strength of a medium carbon steel