This web page lists the references in my paper:

"Intersections of k-element Sets" with Daniel J. Kleitman and Dean Sturtevant, Combinatorica, 1(1981), p. 381-384.

• P. Erdos, private communication.
• R. J. McEliece, The Theory of Information and Coding, Encyclopedia of Mathematics, Vol. 3, Addison-Wesley, Reading, Massachusetts, 1977.