S. Miglietta, A. Agha-Rahimi, M. A. Khalili, A. Moradi, S. Antonouli, and S. A. Nottola, “Morphology and viability of human spermatozoa vitrified with a new, cryoprotectant-free, artificial seminal fluid”, Ital J Anat Embryol, vol. 121, no. 1, p. 194, Oct. 2017.