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:)
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)
Berezin B. Ya., Kenisarin M. M., Chekhovskoi V. Ya., Melting Point of Niobium, Teplofzika Vysokikh Temperatur, 1972, 10, 1214-1217. [English translation: High Temperature, 1972, 10, 1092-1094.] ()
Cezairliyan A., Measurement of Melting Point, Normal Spectral Emittance (at Melting Point), and Electrical Resistivity (above 2650 K) of Niobium by a Pulse Heating Method, High Temp. High Press., 1972, 4, 453-458.
(No DOI)
