1. Instruments and materials;Heuer,1980
2. Endodontology: biologic considerations in endodontic procedures;Seltzer,1971
3. Endodoncia;Maisto,1973
4. Materiales y tecnicas de obturation endodontica;Goldberg,1982
5. American Dental Association Council on Dental Materials, Instruments, and Equipment: ANSI/ADA Specification #57 for Endodontic Filling Materials.