D. W.  Burton, ?Anatomical studies on Australian, New Zealand, and subantarctic Athoracophoridae (Gastropoda: Pulmonata)?, New Zealand Journal of Zoology, vol. 7, pp. 173-198, 1980.

B. A.  Branson, ?The recent Gastropoda of Oklahoma, part VIII. The slug families Limacidae, Arionidae, Veronicellidae, and Philomycidae.?, Proceedings of the Oklahoma Academy of Science, vol. 60, pp. 29-35, 1980.

I. M.  Likharev and Wiktor, A., The Slug Fauna of the USSR and Adjacent Countries (Gastropoda Terrestria Nuda), vol. 3. Leningrad: Akademii Nauk SSSR, Zoologicheskii Institut, 1980, p. 437.