Ong, L., Rytina, I., Garcia, M., Schwarzbauer, H., Coene, L., Lin, H., Juhasz, I., Holdrege, M., and C. Sharp, "Framework Architecture for Signaling Transport", RFC 2719, DOI 10.17487/RFC2719, October 1999, <https://www.rfc-editor.org/info/rfc2719>.