1. D. Marcuse, ?Light Transmission Optics?, (Van Nostrand Reinhold Co., New York, 1972).
2. H. Kogelnik, in ?Integrated Optics?, edited by T. Tamir, (Springer Verlag, Berlin, 1975) pp. 13?81.
3. S. Somekh, in ?Introduction to Integrated Optics?, edited by M. Barnoski (Plenum Press, New York and London, 1974) pp. 265?314.
4. A. Yariv,ibid.in ?, pp. 236?64.
5. W. J. Tabol, in ?Laser Handbook?, edited by F. T. Arrechi and E. O. Schulz-Dubois, (North Holland Publishing Co., Amsterdam, 1972).