Harald(_dot_)T(_dot_)Alvestrand(_at_)uninett(_dot_)no writes:
According to Erik Huizer, informative references to non-standards-track
RFCs are permitted, while normative references are not, in standards-track
RFCs.
Another way of doing it would be to reference the IANA registration
for the ISO-8859-* charsets, which should be possible normatively.
Keld