Angelini, C., Baccetti, B., Piomboni, P., Trombino, S., Aluigi, M., Stringara, S., Gallus, L. and Falugi, C. (2009) “Acetylcholine synthesis and possible functions during sea urchin development”, European Journal of Histochemistry, 48(3), pp. 235–244. doi: 10.4081/892.