1. Kalaba, R., andZagustin, E.,Reduction of Fredholm Integral Equations to Cauchy Systems, University of Southern California, 1970.
2. Golberg, M. A.,Initial Value Methods in the Theory of Fredholm Integral Equations, Journal of Optimization Theory and Applications, Vol. 9, No. 2, 1972.
3. Hille, E.,Lectures in Ordinary Differential Equations, Addison-Wesley Publishing Company, Reading, Massachusetts, 1969.