1. L.A. Sakhnovich, Integral Equations with Difference Kernels on Finite Intervals. (– Basel – Boston: Birkhäuser Verlag, 1996)
2. V. Volterra, Theory of Functionals and of Integral and Integro-Differential Equations, (Dover Publ., New York, 1959)
3. G. Gripenberg, S.-O Londen, O. Staffans, Volterra Integral and Functional Equations. (– Cambridge – New York: Cambridge Univ. Press, 1990)
4. I. Sneddon , The Use of Integral Transforms, (McGraw-Hill, New York, 1972)
5. B. Davis, Integral Transforms and Their Applications. (- New York: Springer – Verlag, 1978)