F. Keilmann

Spectroscopic THz near-field microscope.

D. W. van der Weide, M Helm, O. Drachenko, 2008, Optics express.

Precise determination of high metallic reflection in the far-infrared: The reflection-Fabry-Perot

F. Keilmann, F. Keilmann, K. Barth, 1990 .

Vector frequency-comb Fourier-transform spectroscopy for characterizing metamaterials

D. W. van der Weide, H. V. Ribbeck, M. Brehm, 2008 .

Precision Absolute Frequency and Wavelength Measurements in the Infrared: A Review of Activities at M.I.T.

A. Javan, J. Monchalin, N. Kurnit, 1972 .