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NIST Temperature Scale Database (SRD 60), Version 3.0
Fixed Points Associated with a Selected Reference:
Reference:
Luther, H; Grohmann, K; Fellmuth, B, Determination of thermodynamic temperature and He-4 virial coefficients between 4,2 K and 27,0 K by dielectric constant gas thermometry, Metrologia 33 (1996) 341-352. (DOI:) (1996)