1. Anthes, N., & Michiels, N. K. (2007a). Precopulatory stabbing, hypodermic injections and unilateral copulations in a hermaphroditic sea slug. Biology Letters, 3, 121–124.
2. Anthes, N., & Michiels, N. K. (2007b). Reproductive morphology, mating behavior, and spawning ecology of cephalaspid sea slugs (Aglajidae and Gastropteridae). Invertebrate Biology, 126(4), 335–365.
3. Arnaud, P. M., Poizat, C. L., & Salvini-Plawen, Lv. (1986). Marine-interstitial Gastropoda (including one freshwater interstitial species). In L. Botoseanu (Ed.), Stygofauna Mundi. A Faunistic, Distributional, and Ecological Synthesis of the World Fauna inhabiting Subterranean Waters (including the Marine Interstitial) (pp. 153–165). Leiden: Brill-Backhuys.
4. Baba, K. (1937). Contribution to the Knowledge of a Nudibranch, Okadaia elegans Baba. Japanese Journal of Zoology, 7, 147–190.
5. Bartolomaeus, T. (1997). Ultrastructure of the renopericardial complex of the interstitial gastropod Philinoglossa helgolandica Hertling, 1935 (Mollusca: Opisthobranchia). Zoologischer Anzeiger, 235, 165–176.