1. Electronic evaluation of the fetal heart rate. VIII. Patterns preceding fetal death, further observations;Hon;Am J Obs Gynecol,1963
2. [Mechanisms and significance of the variations registered in the heart rate of the human fetus during labor];Caldeyro-Barcia;Tokoginecol Pract,1964
3. [Electronic control of child birth];Hammacher;Med Klin,1969
4. Electronic fetal monitoring or cardiotocography, 50 years later: what’s in a name?;Ayres-de-Campos;Am J Obstet Gynecol,2018
5. National Institute of Child Health and Human Development Research Planning Workshop;Am J Obstet Gynecol,1997