1. Bojarski, N.N. (1982) “The k-space formulation of the scattering problem in the time domain”, J. Acoust. Soc. Am. 72, 570–584 (This paper includes a comprehensive review of Bojarski’s work).
2. Titchmarsh, E.C. (1950) The Theory of Functions, Oxford University Press, London, second edition, Chapter 13.
3. Franz, W. (1957) Theorie der Beugung elektromagnetischer Wellen, Springer Verlag, Berlin, Chapter 11.
4. Michalski, K.A. (1981) “Bibliography of the singularity expansion method and related topics”, Electromagnetics 1, 493–511.
5. Baum, C.E. (1976) “The singularity expansion method”, in L.B. Felsen (ed.), Transient Electromagnetic Fields, Spinger Verlag, Berlin, Chapter 3.