1. Endodontics;Ingle,1965
2. Endodontic practice;Grossman,1966
3. Obturation of the root canal;Siskin;Dent Clin North Am,1957
4. Sealing properties of endodontic filling materials using radioactive polar and low polar isotopes;Kapsimalis;Oral Surg,1966
5. Massler, M. The sealing of pulpless teeth evaluated with radioisotopes;Marshall;J Dent Med,1961