S. Ivanov, K. Ivanova, and E. Alexov. Rayleigh surface waves along the boundary between a plasma and a metallic screen. Journal of plasma physics, Cambridge University Press, volume 49, issue 2, pages 227-235, 1993.

E. G. Alexov and S. T. Ivanov. Nonreciprocal effects in a plasma waveguide. IEEE transactions on plasma science, IEEE, volume 21, issue 2, pages 254-257, 1993.