https://theconversation.com/is-macron-pushing-france-toward-a-strange-defeat-233011
https://publiclawforeveryone.com/2017/06/10/does-the-salisbury-convention-apply-during-a-hung-parliament/
http://pubdocs.worldbank.org/en/244481520499464074/Growing-United-v03-online-18-03-08.pdf
https://www.esri.ie/system/files/publications/SUSTAT106_1.pdf