Ravara, A., Cunha, M.R. and Rodrigues, C.F. 2007. The occurrence of Natsushima bifurcata (Polychaeta: Nautiliniellidae) in Acharax hosts from mud volcanoes in the Gulf of Cadiz (south Iberian and north Moroccan Margins). Scientia Marina. 71, 1 (Mar. 2007), 95–100. DOI:https://doi.org/10.3989/scimar.2007.71n195.