Topological surface states with persistent high spin polarization across the Dirac point in Bi2Te2Se and Bi2Se2Te / K. Miyamoto, A. Kimura, K. A. Kokh [et.al.] // Physical Review Letters. 2012. Vol. 109, № 16. P. 166802-1-166802-5. URL: http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000445321