1. Perils of the new labor management guidelines;Cohen;Am J Obstet Gynecol,2015
2. The graphic analysis of labor;Friedman;Am J Obstet Gynecol,1954
3. Computer analysis of labour progression;Friedman;J Obstet Gynaecol Br Cwlth,1969
4. The Collaborative Perinatal Study of the National Institute of Neurological Diseases and Stroke: the women and their pregnancies;Niswander,1972
5. Computer analysis of labor progression II. Distribution of data and limits of normal;Friedman;J Reprod Med,1971