Centro Vasco de Arquitectura
Euskal Herriko Arkitektura Ikerkundea
http://en.wikipedia.org/wiki/File:NineChains.JPG
https://en.wikipedia.org/wiki/Nine_Chains_to_the_Moon
http://www.goodreads.com/book/show/285351.Nine_Chains_to_the_Moon
www.farewellbookstore.com
http://www.nous.org.uk/Nine.html
http://arquyma.blogspot.com.es/2011/03/richard-buckminster-fuller-el.html