%% You should probably cite rfc5645 instead of this I-D. @techreport{ietf-ltru-4645bis-10, number = {draft-ietf-ltru-4645bis-10}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-ietf-ltru-4645bis/10/}, author = {Doug Ewell}, title = {{Update to the Language Subtag Registry}}, pagetotal = 13, year = 2009, month = feb, day = 25, abstract = {This memo defines the procedure used to update the IANA Language Subtag Registry, in conjunction with the publication of RFC 5646, for use in forming tags for identifying languages. This memo provides information for the Internet community.}, }