1. Placenta membranacea;Finn;Obstet Gynecol,1954
2. Placenta membranacea with placenta increta: a case report and literature review;Greenberg;Obstet Gynecol,1991
3. Placenta membranacea: report of a case;Janovski;Obstet Gynecol,1961
4. Partial placenta membranacea;Wilkins;Br J Obstet Gynaecol,1991
5. Placenta membranacea;Mathews;Aust N Z J Obstet Gynaecol,1974