1. Ultrasonic Cavity Preparation, Preliminary Report;Oman;New York State D. J.,1954
2. Ultrasonic Cavity Preparation. II. Progress Report;Oman;J.A.D.A.,1955
3. Pulpal Effect of Ultrasonic Cavity Preparation. Preliminary Report;Zach;New York State D. J.,1956
4. Lefkowitz, W., Robinson, H. B. G., and Postle, H. H.: Pulp Response to Cavity Preparation, J. Pros. Den., to be published.
5. Histopathological Evaluation of Pulpal Response to Ultrasonic Cavity Preparation;Butt;I.A.D.R. Preprinted Abstracts No. 34,1956