Churchill, Ruel V.. Complex Variables and Applications / Textual Documents Ruel V. Churchill, James W. Brown. - 5th ed. / - New York : McGraw - Hill book company , 1990. - 361p. ; 23cm. Index ISBN: PB Subjects--Index Terms: Mathematics Complex Variables PG-Mathematics G-Mathematics Dewey Class. No.: 515.9 / Ch 47 Co