Centro Vasco de Arquitectura
Euskal Herriko Arkitektura Ikerkundea
https://sv-m-wikipedia-org.translate.goog/wiki/Holger_Blom?_x_tr_sl=sv&_x_tr_tl=es&_x_tr_hl=es&_x_tr_pto=sc
https://stockholmskallan.stockholm.se/post/13889
https://commons.wikimedia.org/wiki/File:Holger_Blom.jpg
https://www.ebay.com/itm/145001843838
https://spa.archinform.net/arch/25465.htm
https://www.svd.se/a/nqOom/stockholm-holl-andan-nar-svampen-revs-1988
https://www.amazon.ca/Vintage-photo-Holger-Blom-architect/dp/B07DT7PY9N
https://imsvintagephotos.com/products/holger-blom-architect-vintage-photograph-1011522
https://www.amazon.com/-/es/dp/B07DT631LD
https://emp-web-84.zetcom.ch/eMP/eMuseumPlus?service=ExternalInterface&siteId=1&module=artist&objectId=5340&viewType=detailView&lang=sv