1. Stratton, J. A., Electromagnetic Theory, McGraw-Hill, New York, 1941. See also Stratton, J. A. and L. J. Chu, ``Diffraction theory of electromagnetic waves," Phys. Rev., Vol. 56, 99-107, 1939.
2. Schelkunoff, S. A., "Kirchoff’s formula, its vector analogue, and other field equivalence theorem," Proceedings of the Theory of Electromagnetic Waves Symposium, 43-57, Interscience Publishers, New York, 1951. Google Scholar
3. Franz, V. W., "Zur formulierung des huygensschen prinzips," Z. Naturforsch., A, Vol. 3a, 500-506, 1948. Google Scholar
4. Tai, C. T., Generalized Vector and Dyadic Analysis, 2nd Ed., IEEE Press and Oxford University Press, New York and oxford, 1997.
5. Webster, A. G., Partial Differential Equations of Mathematical Physics, 2nd Ed., 208, Dover Publications, New York, 1955.
6. Schelkunoff, S. A., "Some equivalence theorems of electromagnetics and their applications to radiation problems," B.S.T.J., Vol. 15, 92-112, 1936. Google Scholar
7. Tai, C. T., Dyadic Green Functions in Electromagnetic Theory, 2nd Ed., IEEE Press, New York, 1994.
8. Tai, C. T., "A concise formulation of Huygens’s principle for the electromagnetic field," IRE Trans. on Antennas and Propagation, Vol. 9, 634, 1960. Google Scholar
9. Tai, C. T., "Kirchoff theory: scalar, vector, or dyadic?," IEEE Trans. Antennas Propagat., Vol. AP-20, No. 1, 114-115, 1972. Google Scholar
10. Sancer, M. I., "An analysis of the vector Kirchoff equations and the associated boundary line charge," Radio Science, (New Series), Vol. 3, 141-144, 1968. Google Scholar
11. Meixner, J., "Die kantenbedingung in der theorie der beugung elektromagnetischer wellen und volkommen leitenden ebenem schirmen," Ann. Phys., Vol. 441, 2-9, 1949. Google Scholar
12. Collin, R. E., Field Theory of Guided Waves, IEEE Press and Oxford Univ. Press, New York and Oxford, 1991.
13. Sommerfeld, A., Optics, Academic Press, New York, 1954.
14. Levine, H. and J. Schwinger, "On the theory of electromagnetic wave diffraction by an aperture in an infinite plane conducting screen," Theory of Electromagnetic Wave Symposium, 1-38, Interscience Publications, New York, 1951. Google Scholar