Zecchini, F., Vecchione, M., Belcari, P., & Roper, C. F. (2012). Development of the hectocotylus in Illex coindetii (Verany 1837) (Cephalopoda: Ommastrephidae). Scientia Marina, 76(3), 463–472. https://doi.org/10.3989/scimar.03305.07D