Peter Ross Emma Hart Alistair Lawson Andrew Webb Erich Prem Patrick Poelz Giovanna Morgavi Requirements for Getting a Robot to Grow up. 847-856 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2801&spage=847 2003 conf/ecal/2003 ECAL db/conf/ecal/ecal2003.html#RossHLWPPM03