Harald Tveit Alvestrand. X.400 Use of Extended Character Sets. RFC, 1502:1-14, August 1993. [doi]
@article{rfc1502, title = {X.400 Use of Extended Character Sets}, author = {Harald Tveit Alvestrand}, year = {1993}, month = {August}, doi = {10.17487/RFC1502}, url = {https://doi.org/10.17487/RFC1502}, researchr = {https://researchr.org/publication/rfc1502}, cites = {0}, citedby = {0}, journal = {RFC}, volume = {1502}, pages = {1-14}, }