Skiena, Steven S. Implementing discrete mathematics : combinatorics and graph theory with Mathematica / Steven Skiena ; with programs by Steven Skiena and Anil Bhansali. - Redwood City, Calif. : Addison-Wesley, c1990. ISBN: 0201509431 Subjects--Topical Terms: Combinatorial analysis -- Data processing. Dewey Class. No.: 511.60285 SKI