1. Androgens in fishes, amphibians, reptiles, and birds;Ozon,1972
2. Estrogens in fishes, amphibians, reptiles, and birds;Ozon,1972
3. Gonadal steroidogenesis in teleost fishes;Colombo;Inv Pesq,1977
4. The gonadal steroids;Fostier,1983
5. 5β-Pregnane-3α,6α,17α,20β-tetrol and 5β-pregnane-3α,6α,17α-triol-20-one: steroids of ovarian origin in the African catfish, Clarias gariepinus, during oocyle maturation;Schoonen;Gen Comp Endocrinol,1988