Centro Vasco de Arquitectura
Euskal Herriko Arkitektura Ikerkundea
http://www.notre-dame-royan.com/expositions/notre-dame-le-symbole-de-royan/guillaume-gillet-1912-1987/
http://blog.apahau.org/wp-content/uploads/2012/06/A3-A4-80x120gillet300dpi1.jpg