Stampar, S.N., Tronolone, V.B. and Morandini, A.C. 2006. Description and life cycle of the hydrozoan Hydractinia uniformis, sp. nov. (Cnidaria: Hydrozoa: Hydractiniidae), from the coast of southeastern Brazil. Zootaxa. 1200, 1 (May 2006), 43–60. DOI:https://doi.org/10.11646/zootaxa.1200.1.4.