1. Batistić M, Garić R (2016) The case of Bougainvillia triestina Hartlaub 1911 (Hydrozoa, Cnidaria), a 100-year-long struggle for recognition. Mar Ecol 37:145–154. doi: 10.1111/maec.12270
2. Bavestrello G (1987) Description of the hydroid Perarella propagulata sp. nov. (Cnidaria, Hydrozoa) and discussion of relation within the superfamily Bougainvillioidea Petersen. Modern trends in the systematics ecology and evolution of hydroids and Hydromedusae. Clarendon, Oxford, pp 19–27
3. Bavestrello G, Puce S, Cerrano C, Balduzzi A (2000) Life history of Perarella schneideri (Hydrozoa, Cytaedidae) in the Ligurian Sea. Sci Mar 64:141–146. doi: 10.3989/scimar.2000.64s1141
4. Boero F, Bouillon J, Piraino S (1998) Heterochrony, generic distinction and phylogeny in the family Hydractiniidae (Hydrozoa: Cnidaria). Zool Verh 323:25–36
5. Bouillon J (1978) Hydroméduses de l’archipel des Sechelles et du Moçambique. Rev Zool Afr 92:117–172