Centro Vasco de Arquitectura
Euskal Herriko Arkitektura Ikerkundea
https://www.limmattalerzeitung.ch/limmattal/region-limmattal/erdhaeuser-made-in-dietikon-peter-vetsch-bringt-leute-unter-die-erde-129467943
https://adelaparvu.com/2014/06/23/spectaculoase-case-ingropate-in-armonie-cu-pamantul/