Fehse, D. (2013). The genus Willungia Powell, 1938 (Mollusca: Gastropoda: Cypraeoidea) and its assignment to the higher systematics. Palaeontographica A. 299: 149-157.
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Fehse, D.
2013
The genus <i>Willungia</i> Powell, 1938 (Mollusca: Gastropoda: Cypraeoidea) and its assignment to the higher systematics