M. Li, D. Zhirihin, M. Gorlach, X. Ni, D. Filonov, A. Slobozhanyuk, A. Alù, and A. B. Khanikaev, “Higher-Order Topological States in Photonic Kagome Crystals with Long-Range Interactions,” Nature Photonics, Vol. 14, 89-94, (2019).
M. Li, D. Zhirihin, M. Gorlach, X. Ni, D. Filonov, A. Slobozhanyuk, A. Alù, and A. B. Khanikaev, “Higher-Order Topological States in Photonic Kagome Crystals with Long-Range Interactions,” Nature Photonics, Vol. 14, 89-94, (2019).