1. Studies on the placenta of sheep;Alexander;J Reprod Fertil,1964
2. Placentation;Amoroso,1952
3. Diagnostic de gestation par échotomographie chèz la chèvre;Baronet;Méd Vét Québec,1989
4. A note on morphological characteristics of foetal membrane in Pashmina goats;Bhattacharyya;Indian Vet J,1983
5. Ultrasonographic determination of pregnancy in small ruminants;Bretzlaff;Vet Med,1993