1. M.S. Abou El-Seoud, Numerische Behandlung von schwach singulären Integralgleichungen 1. Art, Ph.D. Thesis, Technische Hochschule Darmstadt, February 1979
2. Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables,1965
3. Convergence rates for approximate eigenvalues of compact integral operators;Atkinson;SIAM J. Numer. Anal.,1975
4. Numerical solution of the eigenvalue problem;Baker,1974
5. The Numerical Treatment of Integral Equations;Baker,1977