1. Static and Dynamic Electricity, McGraw-Hill, New York, 1950, Chap. V.
2. Classical Electrodynamics, John Wiley & Sons, New York, 1962, Chap. 3.
3. Classical Electrodynamics (2nd ed.), John Wiley & Sons, New York, 1976, Chaps. 1 and 2.
4. Electromagnetic Fields, McGraw-Hill, New York, 1964, Section 4.5.