The numerical solution of integral equations of the second kind
Kendall E. Atkinson
Cambridge University Press
A comprehensive, up-to-date, and accessible introduction to the numerical solution of a large class of integral equations, this book builds an important foundation for the numerical analysis of these equations. It provides a general framework for the degenerate kernel, projection, and Nyström methods and includes an introduction to the numerical solution of boundary integral equations (also known as boundary element methods).  It is an excellent resource for graduate students and researchers trying to solve integral equation problems and for engineers using boundary element methods.