Cited in: RFC 9402

5 RFCs mentioned in the text of RFC 9402 (Concat Notation)

RFC	Title	Status	Date
20	ASCII format for network interchangeV.G. Cerf	Internet Standard	October 1969
2119	Key words for use in RFCs to Indicate Requirement LevelsS. Bradner	Best Current Practice	March 1997
5234	Augmented BNF for Syntax Specifications: ABNFD. Crocker, Ed., P. Overell	Internet Standard	January 2008
7841	RFC Streams, Headers, and BoilerplatesJ. Halpern, Ed., L. Daigle, Ed., O. Kolkman, Ed.	Informational	May 2016
8174	Ambiguity of Uppercase vs Lowercase in RFC 2119 Key WordsB. Leiba	Best Current Practice	May 2017