@article{CTT100702130,
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  title = {Antiferromagnetic superexchange via 3d states of titanium in EuTiO3 as seen from hybrid Hartree-Fock density functional calculations},
  journal = {Physical Review B},
  year = 2011,
}

@article{CTT100631639,
  author = {Y. Kumagai and F. Oba and I. Yamada and M. Azuma and I. Tanaka},
  title = {First-principles study of defect-induced potentials in Ca2CuO2Cl2.},
  journal = {Phys. Rev. B},
  year = 2009,
}