1. Allaire, G., Kaber, S.M.: Numerical Linear Algebra. Texts in Applied Mathematics, vol. 55. Springer, New York (2008)
2. Anselone, P.M.: Nonlinear Integral Equations. The University of Wisconsin Press, Madison (1964)
3. Aubin, J.-P., Frankowska, H.: Set-Valued Analysis. Birkhäuser, Basel (1990)
4. Bailey, P.B., Shampine, L.F.,Waltman, P.E.: Nonlinear Two Point Boundary Value Problems. Academic, New York (1968)
5. Bernfeld, S., Lakshmikantham, V.: An Introduction to Nonlinear Boundary Value Problems. Academic, New York (1974)