Algorithmic Introduction to Coding Theory (References)

Lecture 1:
Shannon's original paper is available from the Bell Labs website.
A good source on information theory is the text by
Cover and Thomas. In particular, this lecture refers to material
from Chapters 2 and 8 of this book. See also pages 1 to 12 from
Lecture 1 of my
crash course.

Claude E. Shannon.
A Mathematical Theory of Communication.
Bell Systems Technical Journal,
Vol 27, pp. 379423, 623656, July, October, 1948.

Thomas M. Cover and Joy A. Thomas.
Elements of Information Theory.
Wiley Publishing, New York, 1991.