Experimental verification of PbBi2Te4 as a 3D topological insulator / K. Kuroda, H. Miyahara, K. Miyamoto [et.al.] // Physical Review Letters. 2012. Vol. 108, № 20. P. 206803-1-206803-5. URL: http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000431632