| Authors(s) | Koefoed, E. |
| Year | 1956a |
| Title | Isospondyli 1. Gymnophotodermi and Lepidophotodermi. Rep. scient. Results Michael Sars N. Atlant. deep Sea Exped., 1910, 4, II (5): 1-21, 2 fig., 3 pl. |
| Authors(s) | Koefoed, E. |
| Year | 1956a |
| Title | Isospondyli 1. Gymnophotodermi and Lepidophotodermi. Rep. scient. Results Michael Sars N. Atlant. deep Sea Exped., 1910, 4, II (5): 1-21, 2 fig., 3 pl. |