1. Hermafroditism hos svin;Albertsen;Nord. Veterinaermed.,1951
2. Ovine freemartins;Alexander;Nature (London),1964
3. Androgen induction of intersexuality in sheep;Alifakiotis;Theriogenology,1976
4. Three intersexual dogs;Allen;Vet. Rec.,1981
5. “Intersexuality in Vertebrates Including Man.”;Armstrong,1964