| author | date | title | journal / publication | Ax P, Weidemann E, Ehlers B | 1978 | Zur Morphologie sublitoraler Otoplanidae (Turbellaria, Proseriata) von Helgoland und Neapel. [On the morphology of sublittoral Otoplanidae (Turbellaria, Proseriata) from Helogoland and Naples.] | Zoomorphologie 90:113-133. |
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