Lipschultz, Seymour. 2000 solved problems in discrete mathematics / by Seymour Lipschultz, Marc Lars Lipson. - New Delhi : Tata McGraw-Hill, 2002. - iv, 404 p. ISBN: 0070473765 : KES 405 Subjects--Topical Terms: Mathematics. LC Class. No.: QA76.9 / .M35L57