Oppenheim, Alan V. Signals and Systems / by Alan V. Oppenheim, Alan S. Willsky and S. Hamid Nawab. - 2nd ed. - New Delhi : PHI Learning, 2011. - xxx, 957 p. : ill. ; 25cm. Includes bibliographical references and index. ISBN: 9788120312463 (pbk.) Subjects--Topical Terms: Signals. Dewey Class. No.: 621.382 / OPP/S