Gothic sculpture, 1140–1300. pp. 95–98. Beckwith, John. (1961). "Review: The Tomb of Pope Clement II at Bamberg". The Burlington Magazine, Vol. 103, No. 700
biography (页面存档备份,存于互联网档案馆)in Napoleon & Empire website, displaying photographs of his castle of Valençay and of his tomb Gérard Robichaud, Papa Martel