Jaillard, B.; Barry-Etienne, D.; Colinas, C.; De Miguel, A.-M.; Genola, L.; Libre, A.; Neveu, P.; Oliach, D.; Saenz, W.; Sáez, M.; Salducci, X.; Souche, G.; Sourzat, P.; Villeneuve, M. Alkalinity and Structure of Soils Determine the Truffle Production in the Pyrenean Regions. For. syst. 2014, 23, 364-377.