Gambi, M. C., and F. P. Patti. “Reproductive Biology of Perkinsiana Antarctica (Kinberg) (Polychaeta, Sabellidae) in the Straits of Magellan (South America): Systematic and Ecological Implications”. Scientia Marina, vol. 63, no. S1, Dec. 1999, pp. 253-9, doi:10.3989/scimar.1999.63s1253.