Bergamin, L., et al. “Valvulineria Bradyana (Fornasini) in Organic Matter-Enriched Environment (Ombrone River Mouth, Central Italy)”. Alpine and Mediterranean Quaternary, vol. 12, no. 1, Jan. 2023, pp. 51-56, https://amq.aiqua.it/index.php/amq/article/view/685.