Hello
Tanaka
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.88.017002
Yanagisawa
23th-oct-2018: 50 Days Free Access
https://authors.elsevier.com/c/1XxUA1LUy9JJQH
https://staff.aist.go.jp/t-yanagisawa/activity/nsgm.pdf
Gurevich
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.90.047004
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.97.137003
Moler
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.97.237002