
https://www.socialeurope.eu/wp-content/uploads/2019/09/Occ-Pap-14.pdf

https://theconversation.com/que-el-dia-tenga-24-horas-y-no-mas-ni-menos-lo-decidieron-los-antiguos-egipcios-209435

https://www.bruegel.org/dataset/national-policies-shield-consumers-rising-energy-prices