Guillaume Dufay

www.classical.net/music/comp.lst/dufay.html

www.medieval.org/emfaq/composers/dufay.html

www.dailypedia.com/2006/08/07/guillaume-dufay.html

www.malaspina.com/site/person_429.asp

www.karadar.com/Dictionary/dufay.html

www.cpdl.org/wiki/index.php/Guillaume_Dufay.html