Brian Davies (no date) Integral Transforms and Their Applications. Available at: https://books.google.co.uk/books?id=FViAkJi9c7EC&printsec=frontcover&dq=davies+integral+transforms+third+edition&hl=en&sa=X&ved=0ahUKEwj2rcjrz8DMAhXlCsAKHeQ7DjUQ6AEIKDAA#v=onepage&q=davies%20integral%20transforms%20third%20edition&f=false.
Priestley, H.A. (2003) Introduction to complex analysis. 2nd ed. Oxford: Oxford University Press.
Sneddon, I.N. (1972) The use of integral transforms. New York: McGraw-Hill.