1. Endodontia;Coolidge,1950
2. Root Canal Therapy;Grossman,1955
3. Clinical Endodontics;Sommer,1956
4. Clinical Measurement of Pain;Kast;Med. Clin. N. Amer,1968
5. Treatment of the Root Canal of an Infected Tooth in One Appointment;Ferranti;Dent. Dig,1959