Huey, J R Fetal heart rate variability: an approach to automated assessment. [electronic resource] - American journal of obstetrics and gynecology Jul 1979 - 691-5 p. digital Publication Type: Journal Article ISSN: 0002-9378 Standard No.: 10.1016/0002-9378(79)90652-5 doi Subjects--Topical Terms: Apgar ScoreElectrocardiographyFemaleFetal Blood--analysisFetal HeartFetal Monitoring--instrumentationHeart RateHumansHydrogen-Ion ConcentrationInfant, NewbornLabor, ObstetricPregnancy