1. Missed Abortion”;Appelberg;Nord. med.,1952
2. Missed Abortion: Analysis of a 10-Year Series;Borglin;Acta obst. et gynec. scandinav.,1957
3. Principles and Practice of Obstetrics;De Lee,1947
4. Diagnosis and Treatment of Missed Abortion;Dippel;M. Clin. North America,1939
5. Operative Obstetrics;Douglas,1957