1. Clauser, C. E., J. T. McConville, and J. W. Young. 1969. Weight, Volume, and Center of Mass of Segments of the Human Body. AMRL Technical Report. Aerospace Medical Research Laboratory, Wright-Patterson Air Force Base, Ohio.
2. Dempster, W. T. 1955. Space requirements of the seated operator. WADC Tech. Rep. 55: 159.
3. Dick, F. W. 1969. Rotation and the knee joint. Brit. J. Sports Med. 4: 203–208.
4. Gray, H. 1954. Anatomy of the Human Body, pp. 380–388. 26th Ed. Lea & Febiger, Philadelphia.
5. Kennedy, J. C., and J. P. Fowler. 1971. Medial and anterior instability of the knee. J. Bone Joint Surg. 53: 1257–1270.