1. The evaluation of continuous fetal heart rate monitoring in high risk pregnancy;Haverkamp;Am J Obstet Gynecol,1976
2. Validity of fetal monitoring during labor, results of a multicenter study — discussed during a meeting;Jongsma,1985
3. Cardiotocography supplemented with continuous fetal pH monitoring during labour — The effect on the rate of obstetrical interventions and neonatal condition;Weber;Acta Obstet Gynecol Scand,1982
4. Fetal carbon dioxide tension during human labour;Nickelsen;Eur J Obstet Gynecol Reprod Biol,1986
5. The acid base status of the blood;Siggaard-Andersen,1974