Yun-Zhou Sun, Lin Yi and Jian-Sheng Wang. (2012). Effects of Dzyaloshinsky-Moriya Interaction on Planar Rotator Model on Triangular Lattice.
            <i>Communications in Computational Physics</i>. <i>11</i> (4).
            1169-1181.
         doi:10.4208/cicp.100410.020211s