1. Fractures of the upper end of the femur;Barnes;Practitioner,1964
2. The gull-wing sign;Berkebile;Radiology,1965
3. The Radiology of Bones and Joints;Brailsford,1953
4. Cunningham's Text-book of Anatomy;Brash,1951
5. Fractures and Other Injuries;Cave,1961