{{Cite journal| doi = 10.3917/sss.313.0029| volume = 40| issue = 3| pages = 29–37| last1 = Ridde| first1 = Valery| last2 = Hane| first2 = Fatoumata| title = Historical invariants of community health challenges in emergencies in Africa| journal = Sciences Sociales et Santé| date = 2022}}