Davis, M E Continuous monitoring system for fetal electrocardiography. [electronic resource] - American journal of obstetrics and gynecology Dec 1965 - 984-9 p. digital Publication Type: Journal Article ISSN: 0002-9378 Standard No.: 10.1016/0002-9378(65)90159-6 doi Subjects--Topical Terms: Electrocardiography--instrumentationFetal HeartHumansMonitoring, Physiologic