SKOWRONEK, F.; CASANOVA, G.; ALCIATURI, J.; CAPURRO, A.; MONTES, J.; SAPIRO, R. Ultrastructural Analysis Of Sperm Neck In Patients With Idiopathic Infertility. Acta Microscopica, v. 19, n. 3, p. 242-251, 22 nov. 2010.