1. Araiza-Gómez V., Naranjo-García E., Zúñiga G. 2021. Occurrence in Mexico of two European invasive slug species: Arion vulgaris Moquin-Tandon, 1855 and Arion intermedius (Norman, 1852). BioInvasions Records 10: 10-20.
2. Backeljau T., De Bruyn L. 1990. On the infrageneric systematics of the genus Arion Férussac, 1819 (Mollusca, Pulmonata). Bulletin de l'Institut Royal des Sciences Naturelles de Belgique 60: 35-68.
3. Balashov I. A. 2016. Mollyuski. Stebelchatoglazye. Fauna Ukrainy. Naukova Dumka, Kiev.
4. Davies S. M. 1987. Arion flagellus Collinge and A. lusitanicus Mabille in the British Isles: a morphological, biological and taxonomic investigation. Journal of Conchology 32: 339-354.
5. Gural-Sverlova N. V., Gural R. I. 2011. Morfologicheskiye, anatomicheskiye i povedencheskiye kharakteristiki slizney kompleksa Arion lusitanicus s. l. (Arionidae) na zapade Ukrainy. Ruthenica 21: 97-111.