1. A mandibular first molar with five canals: report of case;Beatty;Journal of American Dental Association,1985
2. Five canals in a lower first molar;Berthiaume;Journal of Michigan Dental Association,1983
3. Five root canals in a mandibular first molar;Friedman;Endodontics and Dental Traumatology,1986
4. Study of root canals configuration in mandibular first permanent molar;Goel;Journal of Indian Society for Pedodontic Preventive Dentistry,1991