1. Anatomy of the Root Canals of the Incisors, Cuspids and Bicuspids of the Permanent Teeth;Mueller;J. Am. Dent. Assoc,1933
2. Mesiodistal and Buccolingual Roentgenographic Investigation of 7,275 Root Canals;Pineda;Oral Surg,1972
3. The Anatomy of the Root Canals of the Teeth of the Permanent Dentition;Hess,1925
4. The Internal Anatomy of the Teeth With Special Reference to the Pulp With Branches;Barrett;Dent. Cosmos,1925
5. Anatomy of the Root Canals;Okumura,1926