@article{CTT100560510,
  author = {H. Nakajima and Hideyuki Ishihara and H. Kaneko and Y. Tamaura},
  title = {Effect of Fe doping on photoluminescence of yttria-stabilized zirconia},
  journal = {J. Alloys Compd},
  year = 2007,
}

@article{CTT100560512,
  author = {H. Nakajima and H. Kaneko and Y. Tamaura},
  title = {Effects of Fe doping on crystalline and properties of yttria-stabilized zirconia},
  journal = {J. Phys. Chem. Solids},
  year = 2007,
}