Plausible motion simulation: Inchworm vs. roller. - Juha Holopainen; Mauno Rönkkö (GRAPP (AS/IE), 2007)

Roller: the Effect of the Environment to the Emergence of Behavior. - Juha Holopainen; Mauno Rönkkö (IAT, 2007)

Roller: Adding Target-Oriented Behavior to a Wheeled Mobile Agent. - Juha Holopainen; Mauno Rönkkö; Pekka J. Toivanen (CSIE (5), 2009)