G. B. Parodi, “Le aree rurali dell’Appennino Ligure tra età romana e tardomedioevo. Ricerche storiche e archeologiche in alta Valle Scrivia / The rural areas of the Ligurian Appennines between Roman period and the Late Middle Ages. Historical and archaeological research in Valle Scrivia”, ICC - CHV Studies, no. 12, pp. 67–100, Dec. 2015.