1. Spontaneous cephalic version of breech presentation in the last trimester;Westgren;Br J Obstet Gynaecol,1985
2. Planned Caesarean section for term breech delivery;Hofmeyer;Cochrane Database Syst Rev,2001
3. Cochrane Database Syst Rev 2003 3 CD000166
4. External cephalic version at term with tocolysis and vibroacoustic stimulation;Annapoorna;Int J Obstet Gynecol,1997