http://blogs.lse.ac.uk/brexit/2017/07/06/the-1bn-bung-wont-protect-northern-ireland-from-the-pain-of-a-hard-brexit/
https://qz.com/work/1889973/how-to-overcome-overconfidence-bias/?utm_source=email&utm_medium=daily-brief&utm_content=10185462
https://theconversation.com/que-el-dia-tenga-24-horas-y-no-mas-ni-menos-lo-decidieron-los-antiguos-egipcios-209435