@article{CTT100599292,
  author = {F. Takahashi and H. Tsunakawa and M. Matsushima and N. Mochizuki and Y. Honkura},
  title = {Effects of thermally heterogeneous structure in the lowermost mantle on the geomagnetic field strength},
  journal = {Earth and Planetary Science Letters},
  year = 2008,
}