1. F. Pavese, B. Fellmuth, D. Head, Y. Hermier, A. Peruzzi, A. Szmyrka Grzebyk, L. Zanin, in Temperature: Its Measurement and Control in Science and Industry, vol. 7, Part 1, ed. by D.C. Ripple (AIP, New York, 2003), pp. 161–166
2. F. Pavese, D. Ferri, I. Peroni, A. Pugliese, P.P.M. Steur, B. Fellmuth, D. Head, L. Lipinski, A. Peruzzi, A. Szmyrka Grzebyk, L. Wolber, in Temperature: Its Measurement and Control in Science and Industry, vol. 7, Part 1, ed. by D.C. Ripple (AIP, New York, 2003), pp. 173–178
3. Y. Hermier, L. Pitre, C. Geneville, A. Verge, G. Bonnier, D.I. Head, B. Fellmuth, L. Wolber, A. Szmyrka-Grzebyk, L. Lipinski, M.J. de Groot, A. Peruzzi, in Temperature: Its Measurement and Control in Science and Industry, vol. 7, Part 1, ed. by D.C. Ripple (AIP, New York, 2003), pp. 179–184
4. Steele A.G., Fellmuth B., Head D.I., Hermier Y., Kang K.H., Steur P.P.M., Tew W.L. (2002) Metrologia 39: 551
5. Ancsin J. (1973) Metrologia 9, 147