Demiris, Y.Billard, A.2007-11-142007-11-142007-11-14200710.1109/TSMCB.2006.886946https://infoscience.epfl.ch/handle/20.500.14299/14632WOS:00024510930000110259Programming by DemonstrationImitation LearningRoboticsSpecial Issue on Robot Learning by Observation, Demonstration and Imitationtext::journal::journal article::research article