1. Electron nuclear double resonance in calcium fluoride containing Yb3+ and Ce3+ in tetragonal sites;Baker;Proc. Roy. Soc. A,1968
2. Defect aggregation in anion-excess fluorites. Dopant monomers and dimers;Corish;Phys. Rev,1982
3. Method for estimating local lattice distortions near a magnetic ion based on the parameters of the ligand hyperfine interaction;Gavasheli;Phys. Solid State (Translation of Fizika Tverdogo Tela (Sankt-Peterburg)),2002
4. Granovsky, A.A., 2003. PCGamess code is freely available from http://classic.chem.msu.su/gran/gamess/index.html.
5. Lifetimes of some F-aggregate centres in LiF;Kurobori;J. Phys. (C),1988