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2. Episodes from the Early History of Mathematics by A. Aaboe. Random House, New Mathematical Library, New York (1964).
3. “Functional Aspects of the Abductor Muscles of the Hip,” by V. T. Inman. Journal of Bone and Joint Surgery (Amer) 29, 607–619 (1947).
4. Biomechanics of Human Motion by M. Williams and H. R. Lissner. W. B. Saunders, Philadelphia (1962).
5. Cunningham’s Manual of Practical Anatomy, Vol. 1—Upper and Lower Limbs, 13th ed.; revised by G. T. Romanes. Oxford University Press, London (1966).