Centro Vasco de Arquitectura
Euskal Herriko Arkitektura Ikerkundea
https://www.bostonmagazine.com/property/2018/05/15/emerald-necklace-boston-history/
https://en-m-wikipedia-org.translate.goog/wiki/Emerald_Necklace?_x_tr_sl=en&_x_tr_tl=es&_x_tr_hl=es&_x_tr_pto=sc
https://www.tclf.org/landscapes/emerald-necklace