Roden, Martin S. Analog and digital communication systems / Martin S. Roden. - 4th ed. - Englewood Cliffs, N.J. : Prentice Hall, c1991. - xvi, 505 p. : ill. ; 25 cm. ISBN: 0133999653 LCCN: 89077260 Subjects--Topical Terms: Digital communications.Telecommunication. Dewey Class. No.: 621.382