Progress in artificial intelligence : 13th Portuguese conference on aritficial intelligence, EPIA 2007, workshops: GAIW, AIASTS, ALEA, AMITA, BAOSW, BI, CMBSB, IROBOT, MASTA, STCS, and TEMA, GuimarГЈes, Portugal / SpringerLink (Online service), 2007 r=on-line. - Текст : электронный.