https://www.naiz.eus/fr/hemeroteca/gara/editions/2017-04-19/hemeroteca_articles/udalberri-reivindica-mas-recuerdo-a-las-victimas-de-1936-en-bilbo?slug=udalberri-reivindica-mas-recuerdo-a-las-victimas-de-1936-en-bilbo