1. Filling of root canals in three dimensions;Schilder;Dent Clin North Am,1967
2. Pathways of the pulp,1984
3. Endodontics,1985
4. Isotope determination of a root canal failure;Dow;Oral Surg,1955
5. The sealing of pulpless teeth evaluated with radioisotope;Marshall;J Dent Med,1961