| Authors(s) | Franke, H.D., L. Gutow and M. Janke |
| Year | 1999 |
| Title | The recent arrival of the oceanic isopod Idotea metallica Bosc off Helgoland (German Bight, North Sea): an indication of a warming trend in the North Sea? Helgoländer Meeresuntersuchungen, 52: 347-357. |