1. Foetal blood sampling;BEARD, R.W.;British Journal of Hospital Medicine,1970
2. Foetal blood sampling in clinical obstetrics;BEARD, R.W.; MORRIS, E.D.; CLAYTON, S.G.;Journal of Obstetrics and Gynaecology of the British Commonwealth,1966
3. pH of foetal capillary blood as an indicator of the condition ofthe foetus;BEARD, R.W.; MORRIS, E.D.; CLAYTON, S.G.;Journal of Obstetrics and Gynaecology of the British Commonwealth,1967
4. Reliability of foetal blood sampling;BOWE, E.T.; BEARD, R.W.; FINSTER, M.; POPPERS, P.J.; ADAMSONS, K.; JAMES, L.S.;American Journal of Obstetrics and Gynaecology,1970
5. pH values in the human fetus during labor;BRETSCHER, J.; SALING, E.;American Journal of Obstetrics and Gynaecology,1967