Perl, Unicode and I18N FAQ: Comprehensive document aiming to explain Unicode and international programming to Perl developers and users.
perl-i18n@perl.org: Threaded archives for the e-mail discussion list focusing on internationalization issues with Perl.
Perl.com: Internationalization and Localization - Perl's Locale System: A description of how to set and use the locale system to support international character sets.
The Perl Journal: Localizing Your Perl Programs: Adapting programs for languages other than English. Covers the Locale::Maketext and Locale::Gettext packages. (Spring 1999).