1. H. F. Stimson, “International Practical Temperature Scale of 1948, Text Revision of 1960”, National Bureau of Standards Monograph 37, Superintendent of Documents, U.S. Government Printing Office, Washington, D. C. 10 cents
2. W. F. Roeser and S. T. Lonberger, “Methods of Testing Thermocouples and Thermocouple Materials, National Bureau of Standards. Circular 590, Superintendent of Documents, U.S. Government Printing Office, Washington, D. C. 20 cents
3. C. Halpern and Robert J. Moffat, “Bibliography of Temperature Measurement”, January 1953 to June 1960, National Bureau of Standards Monograph 27, Superintendent of Documents, U. S. Government Printing Office, Washington, D. C. 15 cents
4. R. L. Powell, M. D. Bunch and R. J. Corrucini, Cryogenics 1, 139 (1961)
5. R. L. Powell, L. P. Caywood, M. D. Bunch “Temperature, Its Measurement and Control in Science and Industry”, Vol 3, Part 2 Reinhold, New York 1963