1. Fetal movements in utero;Sadovsky;Obstet. Gynecol.,1977
2. Recognition of fetal death;Zuspan,1969
3. The clinical value of fetal electrocardiography;Hon;Am. J. Obstet. Gynecol.,1960
4. Fetal electrocardiography for the diagnosis of fetal life;Wells;Obstet. Gynecol.,1962
5. The ultrasonic diagnosis of intrauterine fetal death;Gottesfeld;Am. J. Obstet. Gynecol.,1970