@misc{rfc7614,
    series =    {Request for Comments},
    number =    7614,
    howpublished =  {RFC 7614},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC7614},
    url =       {https://www.rfc-editor.org/info/rfc7614},
    author =    {Robert Sparks},
    title =     {{Explicit Subscriptions for the REFER Method}},
    pagetotal = 14,
    year =      2015,
    month =     aug,
    abstract =  {The Session Initiation Protocol (SIP) REFER request, as defined by RFC 3515, triggers an implicit SIP-Specific Event Notification framework subscription. Conflating the start of the subscription with handling the REFER request makes negotiating SUBSCRIBE extensions impossible and complicates avoiding SIP dialog sharing. This document defines extensions to REFER that remove the implicit subscription and, if desired, replace it with an explicit one.},
}