B.D. Dunlap, G.K. Shenoyau, J.M. Friedt, M. Meyer, G.J. Mccarthy. Crystal field properties of Yb$_2$Ti$_2$O$_7$ using $^{170}$Yb Moessbauer spectroscopy.
Physical Review B: Condensed Matter (1978-1997), American Physical Society, 1978, 18, pp.1936.
⟨in2p3-00018010⟩