Phillips, Charles L. Digital Control System Analysis and Design - 3rd ed. - New Delhi Pearson 1998 - XV, 685 p. : ill., tabl. ; 24 cm. - Prentice-Hall International Editions . Bibliogr.ref & Index. ISBN: 978133177299 9780133177299 Subjects--Topical Terms: Digital control systems--Design Dewey Class. No.: 629.895