Bashiri, K., Fluhrer, S., Gazdag, S., Geest, D., and S. Kousidis, "Internet X.509 Public Key Infrastructure -- Algorithm Identifiers for the Stateless Hash-Based Digital Signature Algorithm (SLH-DSA)", RFC 9909, DOI 10.17487/RFC9909, December 2025, <https://www.rfc-editor.org/info/rfc9909/>.