1. Gear engineering;Merit,1971
2. A practical look at gear-tooth damage;Balmforth;Proc Inst Mech Engrs,1964
3. Fundamentals of gear design;Drago,1988
4. The strength of surfaces in rolling contact;Johnson;Proc Inst Mech Engrs,1989
5. Bevel and hypoid gear surface durability: pitting and scuffing;Coleman;Proc Inst Mech Engrs,1967