Kane, C. L.; Mele, E. J. Quantum Spin Hall Effect in Graphene. Physical Review Letters (American Physical Society (APS)). 2005-11-23, 95 (22): 226801. doi:10.1103/physrevlett.95.226801.
Bernevig, B. Andrei; Hughes, Taylor L. Topological insulators and topological superconductors. Princeton. 2013. ISBN 978-1-4008-4673-3. OCLC 934514528.