"History". Centre de Recherches Médicale de Lambaréné (CERMEL). Retrieved 18 February 2017.
free.fr
rapondawalker.free.fr
Biography of Raponds Walker,
Serigne Ahmadou Bamaba Mbacke - spiritual leader of Mouridism was exiled in Lambrene by The French Colonialist for 7 years
accessed 11 August 2008