1. Morphological studies on the fetal membranes of the normal singleton foal at term;Whitwell;Res Vet Sci,1975
2. Morphology and pathology of the equine umbilical cord;Whitwell;J Reprod Fertil,1975
3. The placenta as a determinant of fetal wellbeing in normal and abnormal equine pregnancies;Cottrill;J Reprod Fertil Suppl,1991
4. Evaluation of the fetal membranes at foaling;Rossdale;Equine Vet Educ,2002
5. The effects of maternal age and parity on placental and fetal development in the mare;Wilsher;Equine Vet J,2003