1. Fetal blood flow to and from the placenta;Body,1976
2. Ultrasonic measurements of human fetal blood flow in aorta and umbilical vein: Influence of fetal breathing movements;Eik-Nes,1980
3. Non-invasive measurement of the fetal circulation using ultrasound: A new method;FitzGerald;Br. Med. J.,1977
4. Quantitative blood flow measurement in deep-lying vessels using pulsed Doppler with the Octoson;Gill,1978
5. Flow velocity in the venous return from the placenta;Gill,1980