@inproceedings{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", booktitle = "Proceedings of 31st International Symposium on Lattice Field Theory LATTICE 2013 {\textemdash} PoS(LATTICE 2013)", year = 2014, volume = "187", pages = "207" }