K. Meißner, A. Bick, and R. Bastrop, “On the identity of Spio filicornis (O.F. Müller, 1776)—with the designation of a neotype, and the description of two new species from the North East Atlantic Ocean based on morphological and genetic studies”, Zootaxa, vol. 2815, no. 1, pp. 1–27, Apr. 2011.