@misc{rfc3966,
    series =    {Request for Comments},
    number =    3966,
    howpublished =  {RFC 3966},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC3966},
    url =       {https://www.rfc-editor.org/info/rfc3966},
    author =    {Henning Schulzrinne},
    title =     {{The tel URI for Telephone Numbers}},
    pagetotal = 17,
    year =      2004,
    month =     dec,
    abstract =  {This document specifies the URI (Uniform Resource Identifier) scheme "tel". The "tel" URI describes resources identified by telephone numbers. This document obsoletes RFC 2806. {[}STANDARDS-TRACK{]}},
}