Mirumyan, M., S. Khachatryan, and A. Sedrakyan. “Continuum Description of the Edge States in a (×Z₃)³-Symmetry-Protected Topological Model”. Reports of NAS RA, vol. 126, no. 2, Oct. 2026, p. 10, doi:10.54503/0321-1339-2026.126.2-10.