1. Microscopic and Macroscopic Investigation on Results of Biomechanical Preparation of Root Canal;Gutiérrez;Oral Surg., Oral Med. & Oral Path,1968
2. Some Factors Affecting the Failure of Endodontic Reamers;Lilley;J. D. Res,1965
3. An Investigation of the Fracture of Root Canal Reamers;Lilley;Brit. D. J,1966
4. Über das Abbrechen von Instrumenten bei der Wurzelbehandlung: Ursachen, Verhütung und Entfernung;Castagnola;Schweiz. Monatschr. Zahnh,1955
5. Physical Properties of Carbon Steel Root Canal Files and Reamers;Craig;Oral Surg., Oral Med. & Oral Path,1962