1. Charles Fox.. “The solution of an integral equation,”Cand. J. Maths., 1964,16, 578–86.
2. Titchmarsh, E. C. ..Introduction to the Theory of Fourier Integrals, Oxford, 1948.
3. Erdélyi Arthuret al. .. Tables of Integral Transform, McGraw-Hill Book Company. Inc., 1954,1.