interesting reference for my tree sculpture

http://i1.exhibit-e.com/jamescohan/fe94e0f0.pdf
www.jamescohan.com/artists/roxy-paine/

i was looking at artists to reference in my project for my conceptual sculpture class. It was suggested that I  look at Roxy Paine who creates large metal trees that he installs in sculpture gardens and parks all over america. he creates ambiguos links between these trees and humas veins and arteries.