[1]
R. Pérez-Portela, C. E. Goodwin, B. E. Picton, and X. Turon, “Pycnoclavella stolonialis n. sp. (Tunicata: Ascidiacea), with phylogenetic and distributional remarks on the genus in Europe”, Zootaxa, vol. 2407, no. 1, pp. 51–66, Mar. 2010.