2.0 2025-04-30 de 11.0.0 The Unicode Standard, Version 1.1 Internetstiftelsen i Sverige (IIS), “IDN Reference table for German language” https://github.com/dotse/IDN-ref-tables/blob/master/language-tables/german-lang-ref-table.txt accessed on 2016-10-16 RFC 5891, Internationalized Domain Names in Applications (IDNA): Protocol https://tools.ietf.org/html/rfc5891 ISO/IEC 6937 Third Ed. 2001-12-17- Information technology — Coded graphic character set for text communication — Latin alphabet: Table D.1 (p 35) Use of Latin alphabetic characters. Everson, Michael. The Alphabets of Europe: “German” https://www.evertype.com/alphabets/german.pdf Everson, Michael. The Alphabets of Europe: “German” https://www.evertype.com/alphabets/german.pdf Everson, Michael. The Alphabets of Europe: “German” https://www.evertype.com/alphabets/german.pdf The Unicode Consortium, Common Locale Data Repository (CLDR) Version 28 (2015-09-16) - Locale Data Summary for German [de] https://www.unicode.org/cldr/charts/28/summary/de.html The Unicode Consortium, Common Locale Data Repository (CLDR) Version 28 (2015-09-16) - Locale Data Summary for German [de] https://www.unicode.org/cldr/charts/28/summary/de.html ISO/IEC 646:1991 — Information technology — ISO 7-bit coded character set for information interchange Wikipedia: “Latin Alphabets” https://en.wikipedia.org/wiki/Latin_alphabets - accessed 2015-10-31 Wikipedia: “Latin Alphabets” https://en.wikipedia.org/wiki/Latin_alphabets. accessed 2015-10-31 Wikipedia: “German orthography” https://en.wikipedia.org/wiki/German_orthography-Alphabet DENIC eG, “IDN Character List”, https://www.denic.de/en/know-how/idn-domains/idn-character-list/ NIC.AT, Latin script table for .at TLD, https://www.iana.org/domains/idn-tables/tables/at_latn_1.0.txt