Centro Vasco de Arquitectura
Euskal Herriko Arkitektura Ikerkundea
http://www.sothebys.com/content/sothebys/en/news-video/auction-essays/modern-post-war-british-art/2014/10/art-in-architecture-collection-eugene-penelope-rosenberg.html
http://www.oxforddnb.com/templates/article.jsp?articleid=37067&back=