1. Fetal cardiac arrhythmias;Shenker;Obstet. Gynecol. Surv.,1979
2. Fetal electrocardiography;Shenker;Obstet. Gynecol. Surv.,1966
3. Antenatal detection of fetal A-V dissociation utilizing real-time B-mode ultrasound;Platt;Obstet. Gynecol.,1979
4. Die pranatale fetale elektrokardiographie;Bolte;Gynaekologe,1969