The mail. September 26, 2021
https://www.elcorreo.com/economia/propio-aerogenerador-20210926210122-nt.html
Spri Group. Basque Agency for Business Development. October 14, 2021
https://www.spri.eus/es/empredamientos/federico-mendieta-cleverwind-en-el-mundo-empresarial-si-no-ofreces-un-valor-adido-tienes-pocas-posibilidades-de-exito/