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Chu, B; Machin, G (1996) Recent developments in low temperature non-contact thermometry at the NPL. In: TEMPMEKO 96, 6th International symposium on Temperature and Thermal Measurements in Industry and Science, 10 - 12 September 1996, Torino, Italy.

Chu, B; Machin, G (1996) An evaluation of infrared thermometers by the intercomparison of standard blackbody sources. In: TEMPMEKO 96, 6th International symposium on Temperature and Thermal Measurements in Industry and Science, 10 - 12 September 1996, Torino, Italy.

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