F.P. Wesselingh, G.C. Cadee, and W. Renema. “Flying High: On the Airborne Dispersal of Aquatic Organisms As Illustrated by the Distribution Histories of the Gastropod Genera Tryonia and Planorbarius”. Netherlands Journal of Geosciences, Jan. 1999, pp. 165-74, https://njgjournal.nl/index.php/njg/article/view/12274.