1. Weber W, Weber E: Mechanik der menschlichen Gehwerkzeuge. Göttingen: Dieterich 1836.
2. Muybridge E: Animal locomotion. Philadelphia: J.B. Lippincott Company; 1887.
3. Marey E: Animal Mechanism: A Treatise on Terrestrial and Aerial Locomotion. London: Henry S. King & Co.; 1874.
4. Braune W, Fischer O: Determination of the moments of inertia of the human body and its limbs. Berlin: Springer-Verlag; 1988.
5. Eberhart H, Inman V: Fundamental studies of human locomotion and other information relating to design of artificial limbs. In Report to the National Research Council. University of California, Berkeley; 1947.