1. Delivery of the second twin;Acker;Obstet. Gynecol.,1982
2. Sinusoidal fetal heartrate pattern with vasa previa in twin pregnancy;Antoine;Obstet. Gynecol.,1982
3. The effect of type of delivery upon neonatal outcome in premature twins;Barrett;Am. J. Obstet. Gynecol.,1982
4. Multiple gestation incidence, etiology, and inheritance;Benirschke,1985
5. The acardiac anomaly;Benirschke;Teratology,1977