1. Ya. L. Alpert, V.L. Ginzburg, E.L. Feinberg, The propagation of radio waves, Gov. ed. of theor. techn. literature, Moscow, 1953.
2. L. M. Brekhovskikh, Waves in layered media, by Academic Press, New York, 1960
3. L. Brillouin, M. Parodi, Wave-Propagation in periodic structures, electric Filters and crystal lattices, Dover Publishing Co. New York, 1953.
4. L. A. Weinstein, Diffraction of electromagnetic and sonic waves on the open end of a waveguide, published by Soviet Radio, Moscow, 1953.
5. L. A. Weinstein, Electromagnetic waves, published by Soviet Radio, Moscow, 1957.