@article{CTT100810720,
  author = {Akira Saitoh and Masayuki Itadani and Keta Suzuki and Hiromichi Takebe and Hosono Hosono},
  title = {Optical properties and zero photoelastic constant of ns<sup>2</sup> type metal cation containing oxide glasses},
  journal = {Optical and Quantum Electronics},
  year = 2019,
}

@article{CTT100810718,
  author = {Akira Saitoh and Suguru Kitani and Satoru Matsuishi and Hitoshi Kawaji and Hiromichi Takebe and Hideo Hosono},
  title = {Structure and photoelastic constant of binary ns<sup>2</sup>-type metal cation containing silicate glasses},
  journal = {Journal of Non-Crystalline Solids},
  year = 2019,
}