Centro Vasco de Arquitectura
Euskal Herriko Arkitektura Ikerkundea
http://www.amazon.com/Beton-Arme-Applications-French-Edition/dp/114346477X
http://ecx.images-amazon.com/images/I/519UJR9Z0BL._SL500_AA300_.jpg
http://iris.univ-lille1.fr/handle/1908/4445