1. The Anatomy of the Root-Canals of the Teeth of the Permanent Dentition, Part I;Hess,1925
2. The Anatomy of the Root-Canals of the Teeth of the Deciduous Dentition and the First Permanent Molars, Part 2;Zürcher,1925
3. Morphology of Root Canals;Mueller;J. Am. Dent. Assoc,1936
4. The Internal Anatomy of the Teeth With Special Reference to the Pulp With Its Branches;Barrett;Dent. Cosmos,1925
5. Morphology of Root Canals;Skillin;Am. Dent. Assoc,1932