TY - CHAP A1 - Hartmann, Jürgen A1 - McEvoy, H.C. A1 - Machin, Graham A1 - Friedrich, R. A1 - Hollandt, Jörg T1 - Comparison of the new NPL primary standard Ag fixed-point blackbody source with the primary standard fixed-point of PTB BT - Temperature 2002 Y1 - 2002 CY - Chicago (USA) ER -