1. “Cutting of materials difficult to machine”;Petruhi,1972
2. “Application of surface integrity to production of jet engines”;Bellows;Metals Engineering Quarterly,1972
3. “Surface residual stresses, surface topography and the fatigue behavior of Ti-6A1-4V”;Leverant;Met. Trans,1979
4. “Surface integrity in conventional machining”;Koster,1970