Alberti, G. & Palacios-Vargas, J.G. (1984). Fine structure of spermatogenesis and mature spermatozoa in Cryptocellus boneti Bolivar y Pieltain, 1941 (Arachnida, Ricinulei). Ultrastructure Research 87: 1–12. doi: https://doi.org/10.1016/S0022-5320(84)90111-4
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