1. J.N. Reddy, An Introduction to the Finite Element Method. New York: McGraw-Hill, 2nd ed.1993, pp.18-64.
2. R.B. Guenther and J.W. Lee, Partial Differential Equations of Mathematical Physics and Integral Equations. Englewood Cliffs, NJ: Prentice-Hall, 1988, pp.434-485.
3. Computation of Electromagnetic Fields
4. Method of Moments as Applied to Electromagnetic Problems