Combinatorics for Computer Science (Computers and math series) by Williamson, S. Gill (1985) Hardcover: Williamson, S. Gill: 9780881750201: Amazon.com: Books
Combinatorics for Computer Science (Dover Books on Mathematics): Williamson, S. Gill: 9780486420769: Amazon.com: Books
Fete of Combinatorics and Computer Science by Gyula O.H. Katona | Goodreads