An introduction to the theory of numbers / Ivan Niven, Herbert S. Zuckerman, Hugh L. Montgomery. Theory of numbers. Niven, Ivan Morton, 1915- Zuckerman, Herbert S. Montgomery, Hugh L. Number theory. QA241 .N56 1991 512.7 20 NII Includes bibliographical references (p. 500-502) and index. New York : Wiley, c1991. c1991. 1991 Text xiii, 529 p. : http://www.loc.gov/catdir/description/wiley033/90013013.html http://www.loc.gov/catdir/toc/onix04/90013013.html eng