\bib{1993/lenstra-2512}
\yr 1993
\mr 93k:11116
\by Arjen K. Lenstra
\by Hendrik W. Lenstra, Jr.
\by Mark S. Manasse
\by John M. Pollard
\paper The factorization of the ninth Fermat number
\jour Mathematics of Computation
\issn 0025--5718
\vol 61
\pages 319--349
\endref