homepages/28/870 journals/percom/BickmoreMB09 conf/darpa/UrmsonABBBCDDGGGHHHKKLMMPPRRSSSSSWWZBBDLNSZSTDF09 journals/jfr/UrmsonABBBCDDGGGHHHKKLMMPPRRSSSSSWWZBBDLNSZSTDF08 conf/atal/BickmoreMCB08 conf/vamos/BashroushSKBG08 conf/iva/BickmoreMB07 conf/persuasive/BickmoreMCB07 conf/auic/BrownT00