
https://bristoluniversitypressdigital.com/downloadpdf/journals/emsoc/4/2/article-p199.xml

https://www.hamiltonproject.org/assets/files/Environmental_Facts_FINAL.pdf

https://theconversation.com/tratados-y-territorios-como-evaluar-hechos-historicos-con-normas-de-su-epoca-223952