1. Mechanics of bipedal locomotion;Alexander,1976
2. The gaits of tetrapods: adaptations for stability and economy;Alexander,1981
3. The gaits of bipedal and quadrupedal animals;Alexander;Int. J. Robot. Res.,1984
4. Optimization and gaits in the locomotion of vertebrates;Alexander;Physiol. Rev.,1989
5. Principles of Animal Locomotion;Alexander,2003