[4] ISO/IEC TR 15285:1998
[7] cgm9701.pdf, , http://std.dkuug.dk/jtc1/sc2/docs/cgm9701.pdf
[5] n438.pdf, , http://std.dkuug.dk/jtc1/sc2/wg3/docs/n438.pdf
[6] n462.pdf, , http://std.dkuug.dk/jtc1/sc2/wg3/docs/n462.pdf
[34] n472.pdf, , http://std.dkuug.dk/jtc1/sc2/wg3/docs/n472.pdf
[35] >>34 IETF モデルは不完全と指摘し Unicode モデルを説明
[8] Wayback Machine, https://web.archive.org/web/20000817111412/http://www.ornl.gov/sgml/wg8/document/1909.pdf