1. Kapernick PS. Postpartum hemorrhage, the abnormal pierperium. In: Pernoll ML, editors. Current obstetric and gynecologic diagnosis & treatment. 7 ed. East Norwalk: Appleton & Lange, 1984:568–588.
2. Williams Obstetrics;Pritchard,1985
3. Ultrasound diagnosis of placenta increta;Tabsh;J Clin Ultrasound,1982
4. Ultrasonographic findings in placenta increta;Pasto;J Ultrasound Med,1983
5. Placenta accreta;Finberg;J Ultrasound Med,1992