M. Bodon and S. Cianfanelli, “[New phreatic and stygobitic hydrobiids from the Northern Apennines in Piedmont, Liguria and Emilia-Romagna (Gastropoda: Caenogastropoda: Hydrobiidae)]”, Nat Hist Sci, vol. 9, no. 1, pp. 17–50, Dec. 2021.