http://www.kimmi8.com/2009/08/requiem.html

http://www.google.co.uk/images?client=safari&rls=en&q=George+Brecht&oe=UTF-8&redir_esc=&um=1&ie=UTF-8&source=univ&ei=QezFTNf-OoOL4gbNi6C6Aw&sa=X&oi=image_result_group&ct=title&resnum=3&ved=0CDQQsAQwAg&biw=1567&bih=1004

http://www.google.co.uk/images?client=safari&rls=en&q=Marcel+Broodthaers&oe=UTF-8&redir_esc=&um=1&ie=UTF-8&source=univ&ei=zezFTLvrL5C94gb_6qC6Aw&sa=X&oi=image_result_group&ct=title&resnum=1&ved=0CCQQsAQwAA&biw=1567&bih=1004

http://www.google.co.uk/images?client=safari&rls=en&q=Daniel+Buren&oe=UTF-8&redir_esc=&um=1&ie=UTF-8&source=univ&ei=le_FTL2rL4SQ4AaKrOy5Aw&sa=X&oi=image_result_group&ct=title&resnum=1&ved=0CCkQsAQwAA&biw=1567&bih=1004

http://www.huntercole.org/

http://www.google.co.uk/images?client=safari&rls=en&q=Nathan+Coley&oe=UTF-8&redir_esc=&um=1&ie=UTF-8&source=univ&ei=qPDFTJbWHM_54Aak6-W5Aw&sa=X&oi=image_result_group&ct=title&resnum=1&ved=0CCIQsAQwAA&biw=1567&bih=1004

A couple of my own experiments... cellos.

http://www.artnet.com/artwork/423886968/166767/christian-boltanski-contacts.html

www.edith-russ-haus.de/index.php/Programm/LozanoHemmer

http://illusion.scene360.com/photography/6524/3d-cubist-photography/