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2. Cutting efficiency of endodontic reamers;Oliet;Oral Surg,1973
3. A comparison of the dentin removing ability of five root canal instruments;Molven;Scand J Dent Res,1970
4. Endodontic instruments, an evaluation of cutting ability;DeJong,1975
5. Effects of sterilization and endodontic medicaments on mechanical properties of root canal instruments;Stenman,1977