Powered flight, child's play, silly wheels and walking machines. - Tad McGeer (ICRA, 1989)

Passive walking with knees. - Tad McGeer (ICRA, 1990)

Passive Dynamic Walking. - Tad McGeer (Int. J. Robotics Res., 1990)

Passive Dynamic Biped Catalogue, 1991. - Tad McGeer (ISER, 1991)

Dynamic Walking Robots and the W Prize [Industry/Research News]. - Arthur D. Kuo; Tad McGeer (IEEE Robotics Autom. Mag., 2007)