Structure of the testis and genital duct of freshwater stingray, Himantura signifer (Elasmobranchii: Myliobatiformes: Dasyatidae. Ichthyological Research, 52(2), 123–131
DOI: 10.1007/s10228-004-0262-2
Ultrastructure of spermiogenesis in a freshwater stingray, Himantura signife. Ichthyological Research, 52(4), 379–385
DOI: 10.1007/s10228-005-0300-8
