Ivan'shin, V. A., Aminov, L. K., Kurkin, I. N., Sichelschmidt, J., Stockert, O., Ferstl, J., et al. (2003). Electron Paramagnetic Resonance of Yb3+ Ions in a Concentrated YbRh2Si2 Compound with Heavy Fermions. JETP Letters, 77(9), 526-529. doi:10.1134/1.1591984.