1. The physiological cost of negative work;Abbot;J. Physiol.,1952
2. Energy and power in the leg during normal level walking;Bresler;Prosth. Dev. Res. Proj. Univ. Calif. Berkeley,1951
3. The action of muscles in the body;Elftman,1941
4. Biomechanics of muscle;Elftman;J. Bone Jt Surg.,1966
5. The length-tension diagram of single vertebrate striated muscle fibres;Gordon;J. Physiol.,1964