1. Energy and power in the leg during normal level walking;Bresler,1951
2. The forces and moments in the leg during level walking;Bresler;Trans. ASME,1950
3. The interplay of muscular and external forces in human ambulation;Cappozzo;J. Biomechanics,1976
4. Space requirements of the seated operator;Dempster;Wright Patterson Air Force Base, WADC-TR-55-159,1955
5. Forces and energy changes in the leg during walking;Elftman;Am. J. Physiol.,1939