P. Gegenwart, Y. Tokiwa, K. Neumaier, C. Geibel, F. Steglich: Scaling of the magnetic entropy and magnetization in YbRh2(Si0.95Ge0.05)(2). 2005Physica B-Condensed Matter: 359. ISBN 0921-4526 http://dx.doi.org/10.1016/j.physb.2004.12.044