@article{ivanov1994polaritons, author = "S. T. Ivanov and K. Ivanova and E. Alexov", title = "Polaritons along the interface between an anisotropic semiconductor and a metallic screen", year = 1994, journal = "Physica Scripta", publisher = "IOP Publishing", volume = 49, number = 2, pages = "228" } @article{ivanov1993rayleigh, author = "S. Ivanov and K. Ivanova and E. Alexov", title = "Rayleigh surface waves along the boundary between a plasma and a metallic screen", year = 1993, journal = "Journal of plasma physics", publisher = "Cambridge University Press", volume = 49, number = 2, pages = "227-235" }