Optical properties of crystals with spatial dispersion— Josephson plasma resonance in layered superconductorsL. N. Bulaevskii, Ch. Helm, A. R. Bishop and M. P. MaleyEurophys. Lett., 58 3 (2002) 415-421DOI: https://doi.org/10.1209/epl/i2002-00655-3