1. Fetal development as determined by ultrasonic pulse echo techniques;Thompson;Am. J. Obstet. Gynecol.,1965
2. Ultrasonic fetal cephalometry during the second trimester of pregnancy;Campbell;J. Obstet. Gynaecol. Br. Commonw.,1970
3. Sources of error in sonographic fetal mensuration and estimation of growth;Hellman;Am. J. Obstet. Gynecol.,1967
4. Diagnostic ultrasound in obstetrics and gynecology: Experience on a large clinical service;Martin;Obstet. Gynecol.,1972
5. Ultrasonic determination of fetal maturity at repeat cesarean section;Lee;Obstet. Gynecol.,1971