1. Lehrbuch der Technixchen Zahuheilkunde;Schroeder,1927
2. Sensibility of Teeth to Loads Applied in Different Directions;Adler;J. D. Res.,1947
3. The Influence of Inflammation on the Pain Threshold of the Skin in Man;Schumacher;Proc. A. Research Nerv. & Ment. Dis.,1943
4. Measurements of Pain Sensitivity in Patients with Psychoneurosis;Chapman;Arch. Neurol. & Psychiat.,1947
5. O’Rourke, J. T.; Manly, R. S., and Braley, Louise, unpublished report.