1. The 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. Root canal obturation;Ingle;J Am Dent Assoc,1956
4. Assessment of the sealing properties of root filling materials;Antoniazzi;Odontol Tidskr,1968
5. The leakage of root fillings using glass ionomer cements and other materials;Ford;Br Dent J,1979