@article{CTT100591139,
  author = {Honkura, Y. and Y. Ogawa and M. Matsushima and S. Nagaoka and N. Ujihara and T. Yamawaki},
  title = {A model for observed circular polarized electric fields coincident with the passage of large seismic waves},
  journal = {J. Geophys. Res.},
  year = 2009,
}

@article{CTT100591140,
  author = {Aizawa, K. and Y. Ogawa and M. Mishina and K. Takahashi and S. Nagaoka and N. Takagi and S. Sakanaka and T. Miura},
  title = {Structural controls on the 1998 volcanic unrest at Iwate Volcano: relationship between shallow electric resistive body and possible magmatic fluid ascent route},
  journal = {J. Volcanol. Geotherm. Res.},
  year = 2009,
}