1. Radioimmunoassay of testosterone, 17β-oestradiol and oestrone in the male and female plasma of Rana esculenta during sexual cycle;d'Istria;Steroids Lipids Res.,1974
2. Die Veranderungen des Froschorganismus (R. esculenta) wahrend des Jahres;Gaule;Arch. ges. Physiol.,1901
3. Variations in the vitellogenin titre during the reproductive cycle of Rana esculenta L;Giorgi;Comp. Biochem. Physiol.,1982
4. Vitellogenin hormonal control in the green frog, Rana esculenta. Interplay between estradiol and pituitary hormones;Gobbetti;Comp. Biochem. Physiol.,1985
5. Morphological changes in the reproductive organs of the female edible frog (Rana esculenta L.) in the annual cycle;Juszczyk;Acta biol. cracov. (Zool.),1973