Chase R, Antkowiak T, Geoffroy E, Weatherill D (2004). “Why the ovotestis of Helix aspersa is innervated”. Acta. Biol. Hung.55 (1-4): 239–49. doi:10.1556/ABiol.55.2004.1-4.29. PMID15270240.
Chase R, Antkowiak T, Geoffroy E, Weatherill D (2004). “Why the ovotestis of Helix aspersa is innervated”. Acta. Biol. Hung.55 (1-4): 239–49. doi:10.1556/ABiol.55.2004.1-4.29. PMID15270240.