1. Sealing of pulpless teeth evaluated with radioisotopes;Marshall;J Dent Med,1961
2. Evaluation of sealing properties of endodontic filling materials and techniques: a preliminary study;Blair;J Ky Dent Assoc,1972
3. Leakage of different root canal sealers;Younis;Oral Surg Oral Med Oral Pathol,1976
4. Root canal therapy;Grossman,1978
5. Relative efficiency of germicidal cements;Hill;J Am Dent Assoc,1934