1. Marcuse, D., "Radiation losses of tapered dielectric slab waveguides," Bell Syst. Tech. J., Vol. 49, No. 2, 273-287, 1970.
2. Miyanaga, S. and T. Asakura, "Intensity profiles of outgoing beams from tapered grating couplers," Radio Sci., Vol. 17, No. 2, 135-143, 1982.
3. Rozzi, T. E., "Rigorous analysis of step discontinuity in planar waveguide," IEEE Trans. MTT, Vol. 6, No. 2, 738-746, 1978.
doi:10.1109/TMTT.1978.1129479
4. Rozzi, T. E. and G. H. In'tVeld, "Field and network analysis of interacting step discontinuities in planar dielectric waveguides," IEEE Trans. MTT, Vol. 27, No. 4, 303-309, 1979.
doi:10.1109/TMTT.1979.1129620
5. Asok De, G. V. Attimarad and and J. Sharma, "Numerical analysis of the single step discontinuity in the two dimensional dielectric waveguide," J. of Electromagnetic waves and Applications, Vol. 17, No. 6, 885-900, 2003.
doi:10.1163/156939303322503493
6. Abrahamwitz, M. and I. Stegan, Handbook of Mathematical Functions, Dover Publications, 1972.
7. Collin, R. F., Foundations for microwave engineering, McGraw- Hill, 1992.