@article{Kawai:2020O7, author = "Kawai, Naoki and Fukaya, Hidenori and Matsuki, Yoshiyuki and Mori, Makito and Nakayama, Katsumasa and Onogi, Tetsuya and Yamaguchi, Satoshi", title = "{A lattice formulation of the Atiyah-Patodi-Singer index}", doi = "10.22323/1.363.0149", journal = "PoS", year = 2020, volume = "LATTICE2019", pages = "149" }