References
- Caldeyro‐Barcia R., Mendez‐Bauer C., Poseiro J. J., Escarcena L. A., Pose S. V., Bieniarz J., Arnt I., Gulin L., Althabe O. Control of human fetal heart rate during labor. The Heart and Circulation in the Newborn and Infant. Grune & Stratton, New York 1966; 7–36
- Hammacher K. Perinatal Medicine. George Thieme Verlag, Stuttgart 1969, 1st European Congress, Berlin
- Hon E. H. The classification of fetal heart rate. I. A working classification. Obstet Gynec 1963; 22: 137
- Hon E. H., Lee S. T. Noise reduction in fetal electrocardiography. Am J Obstet Gynec 1963; 87: 1086
- Hon E. H. A fetal electrocardiographic electrode. Yale J Biol Med 1966; 39: 54
- Hon E. H. An Atlas of Fetal Heart Patterns. Harty Press Inc., New Haven, Conn. 1968
- Lindborg B., Wigertz O., Ödman Th. A beat‐to‐beat heart rate meter with linear analog output for muscular exercise studies. Research Groups on Aviation and Naval Medicine of the Swedish Med. Research Council, Karolinska Institutet, Stockholm 1969
- Peterson H., Tyreman N. O., Anberg A. Kardio‐takograf för fosterövervakning under förlossning. Sv Läkartidn 1971; 68: 4387
- Unger F. W., Goodwin J. W. Instrumentation for fetal electrocardiography and intrauterine pressure: A new scalp electrode and radiotelemetry system. Am J Obstet Gynec 1972; 112: 351
- Westin B., Söderberg G., Lundgren C. Apparatur för övervakning av fosterhjärt‐frekvens under förlossning. Swedish Med. Research Council, Karolinska Institutet, Stockholm 1971
- Winter D. A., Trenholm B. G. Reliable triggering for exercise electrocardiograms. IEEE Trans Biomed Engin 1969; 16: 75