R. M. Gavioso, D. Madonna Ripa, P. P. M. Steur, R. Dematteis, and D. Imbraguglio, Determination of the thermodynamic temperature between 236 K and 430 K from speed of sound measurements in helium, Metrologia 56, 045006 (2019). (DOI:)
G.F. Strouse, D.R. Defibaugh, M.R. Moldover, D.C. Ripple, in Temperature: Its Measurement and Control in Science and Industry (TMCSI) Vol 7, ed. by D.C. Ripple (AIP, Melville, New York, 2003), pp. 31-36
(No DOI)
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:)
Lipinski L., Manuszkiewicz H., Szmyrka-Grzebyk A., Reproducibility of Superconducting Transition Temperature of Encapsulated Samples of Indium Used as a Temperature Fixed Point, Cryogenics, 1993, 33, 995-998. (DOI:)
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)
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)