Calder DR.

On a collection of hydroids (Cnidaria, Hydrozoa, Hydroidolina) from the west coast of Sweden, with a checklist of species from the region

. Zootaxa [Internet]. 2012 Jan. 24 [cited 2025 Apr. 20];3171(1):1–77. Available from: https://mapress.com/zt/article/view/zootaxa.3171.1.1