The hybrid mode propagation of surface plasmon polaritons at the interface of graphene and a chiral mediumBakht Amin Bacha, Tahir Khan, Naveed Khan, S. Arif Ullah, M. S. Abdul Jabar and Amin Ur RahmanEur. Phys. J. Plus, 133 12 (2018) 509DOI: https://doi.org/10.1140/epjp/i2018-12386-1