A broadband FFT spectrometer for radio and millimeter astronomy A. O. Benz, P. C. Grigis, V. Hungerbühler, H. Meyer, C. Monstein, B. Stuber and D. Zardet A&A, 442 2 (2005) 767-773 Published online: 07 October 2005 DOI: 10.1051/0004-6361:20053568