Periodic equilibrium examples for 2D structures with two particle unit cells. Red and blue circles denote magnets with dipole moments perpendicular to the lattice plane pointing towards and away from the reader respectively. Black lines denote elastic connections between magnets. Particles in the unit cell have been highlighted by placing yellow dots in their centers. Reprinted from M. Schaeffer and M. Ruzzene, Wave propagation in multistable magneto-elastic lattices, Int. J. Solids Struct. 56–57 (2015) 78–95, copyright (2015), with permission from Elsevier.