https://www.letemps.ch/opinions/hei-garder-licence-relations-internationales
https://www.graduateinstitute.ch/sites/internet/files/2020-11/bologne.pdf
https://www.graduateinstitute.ch/files/live/sites/iheid/files/sites/international_law/users/Marcelo_Kohen/public/articles_interviews/rule_force.pdf
https://www.graduateinstitute.ch/sites/internet/files/2020-11/us_practice.pdf