http://www.panem.hu/a_konyv.php?PHPSESSID=4a1394bd9315d036ba3c6686d2d8435c&konyv=194&katid=-1 http://www.williamspublishing.com/Books/5-8459-0887-6.html http://mitpress.mit.edu/MITECS/ai.intro.html http://mitpress.mit.edu/MITECS/ http://mitpress.mit.edu/MITECS/work/russell.html http://mitpress.mit.edu/MITECS/ http://www.eecs.wsu.edu/~schlimme/ml95.html