Guilloux-Benatier, Michèle, Jacques Duteau, and Gérard Seguin. “Les Grands Types De Sols Viticoles De Pomerol Et Saint-Emilion”. OENO One 12, no. 3 (September 30, 1978): 141-165. Accessed December 6, 2019. https://oeno-one.eu/article/view/1423.