@incollection{Hartmann2003, author = {J{\"u}rgen Hartmann}, title = {Comparison of the New NPL Primary Standard Ag Fixed-Point Blackbody Source with the Primary Standard Fixed}, booktitle = {Temperature: Its measurement and control in science and industry, volume 7}, editor = {Dean C. Ripple}, isbn = {0-7354-0153-5}, url = {https://www.researchgate.net/profile/Graham_Machin/publication/252572390_Comparison_of_the_New_NPL_Primary_Standard_Ag_Fixed-Point_Blackbody_Source_with_the_Primary_Standard_Fixed_Point_of_PTB/links/00b4952efb53eca21d000000/Comparison-of-the-New-NPL-Primary-Standard-Ag-Fixed-Point-Blackbody-Source-with-the-Primary-Standard-Fixed-Point-of-PTB.pdf}, year = {2003}, }