Astrid Weiss Daniela Wurhofer Michael Lankes Manfred Tscheligi Autonomous vs. tele-operated: how people perceive human-robot collaboration with hrp-2. 257-258 2009 HRI http://doi.acm.org/10.1145/1514095.1514164 conf/hri/2009 db/conf/hri/hri2009.html#WeissWLT09