1. Clinical and Roentgen Pelvimetry: A Correlation;Savage;Am. J. Obst. & Gynec.,1951
2. Further Studies on the Pelvic Architecture;Caldwell;Am. J. Obst. & Gynec.,1934
3. The Use of the Roentgen Ray in Obstetrics;Caldwell,1939
4. Estimation of Pelvic Capacity;Mengert;J.A.M.A.,1948
5. Ueber die Prognose der Geburt bei engem Becken;Müller;Arch. f. Gynäk.,1886