Energy-dependent light quenching in CaWO4 crystals at mK temperatures nork Strauss, R, Angloher, G, Bento, A, Bucci, C, Canonica, L, Carli, W, Erb, A, von Feilitzsch, F, Gorla, P, Guetlein, A, Hauff, D, Hellgartner, D, Jochum, J, Kraus, H, Lanfranchi, J, Loebell, J, Muenster, A, Petricca, F, Potzel, W, Proebst, F, Reindl, F, Roth, S, Rottler, K, Sailer, C, Schaeffner, K