In the following email addresses, please replace "at" by "@" and "dot" by ".". For example, should read . Jim Fougeron contributed the expression parser, the primality testing tools, and several command-line options. Laurent Fousse contributed the middle product code, the autoconf/automake tools, and author of the Debian package. Alexander Kruppa (substitute appropriately) joined Paul Zimmermann at release 5, contributed the Toom-Cook multiplication code, the special code for Fermat numbers, and many other nice things. Dave Newman contributed the Kronecker-Scho"nhage multiplication code. Paul Zimmermann author of the first version of the program.