A note on hybrid waves in plane layered waveguiding structures
E. O. Biteleva, D. V. Valovik

References
1.	F. V. Atkinson, A. B. Mingarelli, Multiparameter eigenvalue problems, CRC Press, 2011, 292 pp.
2.	L. A. Vainshtein, Elektromagnitnye volny, Radio i svyaz, M., 1988, 440 pp.
3.	V. F. Vzyatyshev, Dielektricheskie volnovody, Sovetskoe radio, M., 1970, 216 pp.
4.	A. M. Goncharenko, V. A. Karpenko, Osnovy teorii opticheskikh volnovodov, Nauka i tekhnika, Minsk, 1983, 237 pp.