- [1] [CITE@en[[[RFC 2629]] - Writing I-Ds and RFCs using XML]], [TIME[2021-03-28T08:59:32.000Z]], [TIME[2021-04-09T08:55:38.206Z]] <https://tools.ietf.org/html/rfc2629#section-2.2.3>
- [2] [CITE@en[[[RFC 2629]] - Writing I-Ds and RFCs using XML]], [TIME[2021-03-28T08:59:32.000Z]], [TIME[2021-04-09T08:59:04.875Z]] <https://tools.ietf.org/html/rfc2629#appendix-B>