A.A. Zvyagin and A.V. Makarova, Low-temperature behavior of disordered magnetic impurities: Distribution of effective Kondo temperatures, Low Temp. Phys. 30, 479–482, (2004) [Fiz. Nizk. Temp. 30, 639-643, (2004)] DOI: https://doi.org/10.1063/1.1768352.