http://www.MarcelDuchamp.net/
http://www.freshwidow.com/duchamp-aug96.html
http://www.geekchic.com/fanatiq2.htm
http://www.franceweb.fr/zumba/Duchamp/index.html 
http://www.p22.com/projects/duchamp.html
http://www.monmouth.com/~mfrankel/glass/sieves.html
http://www.artistsgolf.com/duchamp.htm
http://paris.org/Kiosque/duchamp/
http://www.val.net/~tim/timeline.html 
http://home.sprynet.com/sprynet/mindweb/marcel.htm