Homotopy invariant in time-reversal and twofold rotation symmetric systems
1998 ◽
Vol 31
(17)
◽
pp. L313-L319
◽
2013 ◽
Vol E96.A
(7)
◽
pp. 1653-1656
◽
2012 ◽
Vol E95.A
(6)
◽
pp. 1056-1064
◽
2013 ◽
Vol 34
(9)
◽
pp. 2273-2276
◽