@article{Nagata:20143D,
  author = "Nagata, Keitaro",
  title = "{A property of fermions at finite density by a reduction formula of fermion determinant}",
  doi = "10.22323/1.187.0207",
  journal = "PoS",
  year = 2014,
  volume = "LATTICE 2013",
  pages = "207"
}