@article{CTT100614687,
  author = {Y. Matsumoto and M. Katayama and Takatoshi Abe and T. Ohsawa and I. Ohkubo and H. Kumigashira and M. Oshima and H. Koinuma},
  title = {Chemical trend of Fermi-level shift in transition metal-doped TiO2 films},
  journal = {Journal of the ceramic Society of Japan},
  year = 2010,
}