Walking inverted on ceilings with wheel-legs and micro-structured adhesives. - William A. Breckwoldt; Kathryn A. Daltorio; Lars Heepe; Andrew D. Horchler; Stanislav N. Gorb; Roger D. Quinn (IROS, 2015)

Speedy Whegs Climbs Obstacles Slowly and Runs at 44 km/hour. - William A. Breckwoldt; Richard J. Bachmann; Ronald Leibach; Roger D. Quinn (Living Machines, 2019)