https://www.workingwithcrowds.com/bolivar-metro-station-disaster-11-03-1918/
https://en.wikipedia.org/wiki/Bolivar_station_%28Paris_M%C3%A9tro%29 
https://lhistoireenrafale.lunion.fr/2019/03/11/12-mars-1918-le-drame-de-la-station-bolivar-du-metropolitain/
https://fr.wikipedia.org/wiki/Bousculade_du_11_mars_1918_%C3%A0_la_station_Bolivar
