References:

James E. Keenan
"Digest.pl:  A Do-It-Yourself Archive for Subscribers to Mailing List Digests"
http://www.concentric.net/~Jkeen/digest/digest.zip

Casey West
"Turning the Tide on Perl's Attitude Toward Beginners"
http://www.perl.com/pub/2001/05/29/tides.html