@misc{feng2007electronic,
  title={Electronic structures and lattice dynamics of BaTiO3 and BiFeO3 : a comparative first-principles study},
  author={Hong-Jian Feng},
  year={2007},
  eprint={0711.3942},
  archivePrefix={arXiv},
  primaryClass={cond-mat.mtrl-sci},
  url={https://arxiv.org/abs/0711.3942}
}