1. A. Erdélyi, Tables of Integral Transforms, Volume II, McGraw-Hill, 1954.
2. J. Hadamard, Lectures on Cauchy's problem in Linear Partial Differential Equations, Dover Publications, 1952.
3. M. J. Lighthill, Introduction to Fourier Analysis and Generalised Functions, Cambridge University Press, 1959.
4. K. S. Miller, Linear Differential Equations in the Real Domain, W. W. Norton, 1963.