Crystal field and spin-fluctuations in heavy fermion metal CeAl3,   YbRh2Si2 and UPd2Al3*
  We have shown the existence of localized crystal-field states in conducting magnetic materials coexisting with conduction electrons in CeAl3, UPd2Al3 and YbRh2Si2. We point out that the magnetism is strongly correlated with the very detailed local atomic-scale crystal structure. 
R.J. Radwanski Z. Ropka