{{Cite journal| volume = 315| pages = 1741–1746| last1 = Guerrot| first1 = Catherine| last2 = Calvez| first2 = Jean-Yves| last3 = Bonjour| first3 = Jean-Luc| last4 = Chantraine| first4 = Jean| last5 = Chauvel| first5 = Jean-Jacques| last6 = Dupret| first6 = Lionel| last7 = Rabu| first7 = Dominique| title = Le Briovérien de Bretagne centrale et occidentale: nouvelles données radiométriques| journal = CR. Acad. Sci., Paris| series = série II| date = 1992}}