Kreutzer, S., D. Hülle, K. Jørkov Thomsen, A. Hilgers, A. Kadereit, and M. Fuchs. “Quantification of Cross-Bleaching During Infrared (IR) Light Stimulation”. Ancient TL, vol. 31, no. 1, June 2013, pp. 1-10, doi:10.26034/la.atl.2013.468.