Sharp, Chip; Lin, Haui-an Paul; García, Miguel Angel; Rytina, Ian; Coene, Lode; Ong, Lyndon; Holdrege, Matt; Schwarzbauer, Hannsjuergen; Juhasz, Imre (1999). "RFC2719: Framework Architecture for Signaling Transport". The Internet Society. https://tools.ietf.org/html/rfc2719