R Köhler

Experimental procedures for the comparison of cryogenic radiometers at the highest accuracy

R Pello, R. Pelló, R Köhler, 1996 .

Diffraction effects in the radiometry of coherent beams.

G. Forbes, R Köhler, G W Forbes, 1996, Applied optics.

Stability under vacuum of silicon trap detectors and their use as transfer instruments in cryogenic radiometry.

R Köhler, R Goebel, S Yilmaz, 1996, Applied optics.

Comparison of the BIPM cryogenic radiometer with a mechanically cooled cryogenic radiometer from the NPL

R Pello, R. Pelló, R Köhler, 1996 .