1. Guidelines for the use of fetal monitoring;FIGO subcommittee on standards in perinatal medicine;Int J Gynecol Obstet,1987
2. A randomized controlled trial of non-stress antepartum cardiotocography;Flymm;Br J Obstet Gynaecol,1982
3. Computer diagnosis of fetal distress;Maeda;Sanfujinkachiryo Jpn,1978
4. Prenatal and intrapartum high risk screening. I. Prediction of the high-risk neonate;Hobel;Am J Obstet Gynecol,1973
5. A simplified antepartum risk-scoring system;Edwards;Obstet Gynecol,1979