1. Noise exposure from dental drills;Schubert;JADA,1963
2. Methods used in evaluation of high-speed dental instruments and some results;Bernier;Oral Surg,1959
3. Acoustic trauma in high-speed dental drills;Hopp;Laryngoscope,1962
4. Noise levels of a newly designed handpiece;Cantwell;J Prosthet Dent,1965
5. Belt driven super speed equipment;Sockwell;J NC Dent Soc,1963