Mabel: Building a Robot Designed for Human Interaction. - Jonathan Schmid; Thomas Kollar; Eric M. Meisner; Victoria Sweetser; David Feil-Seifer; Chris Brown 004; Ben Atwood; Jenine Turner; Diana Calarese; Scott Cragg; Habib Chaudhary; Mike Isman (AAAI Mobile Robot Competition, 2002)