1. An improved method of fetal cephalometry by ultrasound;Campbell, S.;Journal of Obstetrics and Gynaecology of the British Commonzvealth,1968
2. The prediction of fetal maturity by ultrasonic measurement of the biparietal diameter;Campbell, S.;Journal of Obstetrics and Gynaecology of the British Commonwealth
3. "Gestation sac" volumes as determined by sonar in the first trimester of pregnancy;Robinson, H.P.;Bry Obstet Gynaecol,1975
4. Prenatal diagnosis of soft-tissue malformations by ultrasound and x-ray;Sand, H.; Bock, J.E.;Acta Obstet Gynecol Scand,1976
5. Placentography by sonar;Donald, I.; Abdulla, U.;Journal of Obstetrics and Gynaecology of the British Commonwealth,1968