T. G. Mackay and A. Lakhtakia. Negative refraction, negative phase velocity, and counterposition in bianisotropic materials and metamaterials. Physical Review B. 2009, 79: 235121. Bibcode:2009PhRvB..79w5121M. doi:10.1103/PhysRevB.79.235121.
T. G. Mackay and A. Lakhtakia. Negative refraction, negative phase velocity, and counterposition in bianisotropic materials and metamaterials. Physical Review B. 2009, 79: 235121. Bibcode:2009PhRvB..79w5121M. doi:10.1103/PhysRevB.79.235121.