1. Improvement in apparatus for cooling the teeth;Oudry,1863
2. Reduced temperatures in surgery;Allen;Am. J.Surg.,1942
3. Dental anesthesia induced by local refrigeration;Restarski;J.A.D.A.,1944
4. Effectiveness of chilled burs in eliminating pain;Thomas;J. D. Res.,1941
5. Refrigeration anesthesia in cavity preparation; the WaRoPa method;Fritz;Internat. J. Anesth,1953