@article{Fukaya:2022XY,
  author = "Fukaya, Hidenori",
  title = "{A physicist-friendly reformulation of the Atiyah-Patodi-Singer index (on a lattice)}",
  doi = "10.22323/1.396.0012",
  journal = "PoS",
  year = 2022,
  volume = "LATTICE2021",
  pages = "012"
}