Gallus, L, P Ramoino, M Faimali, V Piazza, G Maura, and M Marcoli. 2009. “Presence and Distribution of Serotonin Immunoreactivity in the Cyprids of the Barnacle Balanus Amphitrite”. European Journal of Histochemistry 49 (4):341-48. https://doi.org/10.4081/961.