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Eilers, J. J.; Biner, D.; van Wijngaarden, J. T.; Krämer, K.; Güdel, H.-U.; Meijerink, A. (2010). Efficient visible to infrared quantum cutting through downconversion with the Er3+–Yb3+ couple in Cs3Y2Br9. Applied physics letters, 96(15), 151106/1-151106/3. Melville, N.Y.: American Institute of Physics 10.1063/1.3377909
