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