Ultrastructural study of the interactions and fusion of ram spermatozoa with zona-free hamster oocytes J.-E. FLÉCHON, A. PAVLOK and Bernadette FLÉCHONReprod. Nutr. Dévelop., 26 4 (1986) 999-1008DOI: https://doi.org/10.1051/rnd:19860607