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NIST, National Institute of Standards and Technology, U.S. Department of Commerce
NIST Temperature Scale Database (SRD 60), Version 3.0

ITS-90 References for Temperature Points:

Element: Pb
Year Reference Data with Ref.
1996 Bedford, RE; Bonnier, G; Maas, H; Pavese, F, Recommended values of temperature on the International Temperature Scale of 1990 for a selected set of secondary reference points, Metrologia, 33 (1996) 133-154. (DOI:)
1992 Fellmuth B., Temperature Fixed-Points using High-purity Superconductors, in Temperature, Its Measurement and Control in Science and Industry (TMCSI), 1992, 6, 233-238. (No DOI)
1992 Li Zhiran, Xia Yongjian, Huang Shuangkai, The Study of Superconductive Transition Temperatures for Thermometric Fixed Points, in Temperature, Its Measurement and Control in Science and Industry (TMCSI), 1992, 6, 239-242. (No DOI)
1979 K. H. Berry, NPL-75: A Low Temperature Gas Thermometry Scale from 2.6 K to 27.1 K, Metrologia 15, 89 (1979). (DOI:)
1963 McLaren E. H., Murdock E. G., The Freezing Points of High-Purity Metals as Precision Temperature Standards. VII. Thermal Analyses on Seven Samples of Bismuth, Can. J. Phys., 1963, 41, 95-112. (DOI:)
1960 McLaren E. H., Murdock E. G., The Freezing Points of High Purity Metals as Precision Temperature Standards. VI. Thermal Analyses on Five Samples of Lead with Purities Greater than 99.999+%, Can. J. Phys., 1960, 38, 577-587. (DOI:)