1. From Semaphore to Satellite, The Story of the ITU, International Telecommunications Union, 1965.
2. R. W. Lucky, Silicon Dreams: Information, Man, and Machine, St. Martins Press, 1989.
3. N. Abramson, Information Theory and Coding, McGraw-Hill, 1963.
4. R. Gallager, Information Theory, Wiley, 1968.
5. R. E. Blahut, Principles and Practice of Information Theory, Addison-Wesley, New York, 1987.