| Authors(s) | Spoel, S. van der and Pafort-van Iersel, G. J. S. |
| Year | 1982 |
| Title | Pneumoderma degraaffi n. sp., a pteropod new to science (Mollusca, Opistobranchia). Bull. zool. Mus. Univ. Amst. 9 (3): 17-20. |
| Authors(s) | Spoel, S. van der and Pafort-van Iersel, G. J. S. |
| Year | 1982 |
| Title | Pneumoderma degraaffi n. sp., a pteropod new to science (Mollusca, Opistobranchia). Bull. zool. Mus. Univ. Amst. 9 (3): 17-20. |