Rosen, Kenneth H. Discrete mathematics and its applications / Kenneth H. Rosen.- 4th ed. - 4e - Boston : WCB/McGraw-Hill, c1999. - xxii, 678 p. : ill. ; 27 cm. ISBN: 0071167560 Subjects--Topical Terms: Mathematics. Computer science--Mathematics. Dewey Class. No.: 511 ROS