Wikipedia on Gait                     http://en.wikipedia.org/wiki/Gait
Curtin Clinical Gait Analysis      http://www.univie.ac.at/cga/
Pribut's Running Injuries            http://www.drpribut.com/sports/sportframe.html
History of Study of Locomotion  http://www.univie.ac.at/cga/history/modern.html
Major Determinants of Gait        http://www.ejbjs.org/cgi/reprint/35/3/543.pdf
Passive Dynamic Walking         http://ruina.tam.cornell.edu/hplab/pdw.html