1. Biologic aspects of endodontics. III. Periapical tissue reactions to root canal instrumentation;Seltzer;Oral Surg,1968
2. Nature's method of making perfect root canal fillings following pulp removal, with a brief consideration of the development of secondary cementum;Grove;Dent Cosmos,1921
3. Some factors in root canal treatment;Blayney;J Am Dent Assoc,1924
4. Anatomy of the root apex in relation to treatment problems;Coolidge;J Am Dent Assoc,1929
5. Microscopic investigation of root apices;Kuttler;J Am Dent Assoc,1955