Planck-LFI radiometers' spectral response

Zonca, A; Franceschet, C; Battaglia, P; Villa, F; Mennella, A; D'Arcangelo, O; Silvestri, R; Bersanelli, M; Artal, E; Butler, Rc; Cuttaia, F; Davis, Rj; Galeotta, S; Hughes, N; Jukkala, P; Kilpia, Vh; Laaninen, M; Mandolesi, N; Maris, M; Mendes, L; Sandri, M; Terenzi, Luca; Tuovinen, J; Varis, J; Wilkinson, A.