http://aswathdamodaran.blogspot.com/2020/09/sounding-good-or-doing-good-skeptical.html
https://theconversation.com/solo-el-11-5-de-la-economia-de-la-union-europea-es-circular-como-aumentar-el-porcentaje-223372
https://www.ips-journal.eu/topics/economy-and-ecology/europes-decarbonisation-challenge-5075/?utm_campaign=en_880_20210406&utm_medium=email&utm_source=newsletter
https://wiiw.ac.at/rrf-2-0-ein-permanenter-eu-investitionsfonds-im-kontext-von-energiekrise-klimawandel-und-eu-fiskalregeln-dlp-6413.pdf