MIME related standards

RFC 1766 Tags for the Identification of Languages.
RFC 2045-2049 MIME (Multipurpose Internet Mail Extensions)
RFC 2047 Part Three: Message Header Extensions for Non-ASCII Text.
RFC 2183 Communicating Presentation Information in Internet Messages: The Content-Disposition Header Field.
RFC 2231 MIME Parameter Value and Encoded Word Extensions: Character Sets, Languages, and Continuations.

Internationalization
O'Reilly Apache Conference, 24 August 1999
Andreas König (on CPAN: ANDK)
<andreas.koenig@anima.de>