{{Cite conference| publisher = BRGM - Service géologique national| pages = 74| last1 = Trautmann| first1 = F.| last2 = Becq-Üiraudon| first2 = J.-F.| last3 = Carn| first3 = A.| title = Notice explicative de la feuille 353- Janzé| location = Orléans| series = Carte géol. France (1/50 000)| date = 1994}}