1. Assali NS (1972) (ed.) Pathophysiology of gestation. Volli: Fetal-Placental Disorders. Volili: Fetal and Neonatal Disorders. Academic Press, New York London
2. Becker V, Schiebler TH, Kubli F (1981) (Hrsg) Die Plazenta des Menschen. Thieme, Stuttgart New York
3. Benirschke K, Driscoll SG (1967) The Pathology of the Human Placenta. In: Hdb Spez Path Anat Hist, Bd VII/5. Springer, Berlin Heidelberg New York, pp 98–571
4. Berry CL (1981) (ed) Paediatric Pathology. Springer, Berlin Heidelberg New York
5. Evans HE, Glass L (1976) Perinatal Medicine. Harper and Row, New York San Francisco London