Eller, D P Distance from an intrauterine hydrophone as a factor affecting intrauterine sound pressure levels produced by the vibroacoustic stimulation test. [electronic resource] - American journal of obstetrics and gynecology Aug 1995 - 523-7 p. digital Publication Type: Journal Article ISSN: 0002-9378 Standard No.: 10.1016/0002-9378(95)90277-5 doi Subjects--Topical Terms: Acoustic Stimulation--methodsFemaleFetal Monitoring--methodsFetal MovementHeart Rate, FetalHumansLabor, ObstetricPregnancySoundSound SpectrographyUterusVibration