\bib{1994/alford}
\yr 1994
\mr 95k:11114
\by W. R. Alford
\by Andrew Granville
\by Carl Pomerance
\paper There are infinitely many Carmichael numbers
\jour Annals of Mathematics
\issn 0003--486X
\vol 139
\pages 703--722
\url http://cr.yp.to/\allowbreak bib/\allowbreak entries.html#\allowbreak 1994/\allowbreak alford
\endref