%% You should probably cite rfc6873 instead of this I-D.
@techreport{ietf-sipclf-format-10,
    number =    {draft-ietf-sipclf-format-10},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-ietf-sipclf-format/10/},
    author =    {Gonzalo Salgueiro and Vijay K. Gurbani and Adam Roach},
    title =     {{Format for the Session Initiation Protocol (SIP) Common Log Format (CLF)}},
    pagetotal = 30,
    year =      2012,
    month =     dec,
    day =       21,
    abstract =  {The SIPCLF Workgroup has defined a common log format framework for Session Initiation Protocol (SIP) servers. This common log format mimics the successful event logging format found in well-known web servers like Apache and web proxies like Squid. This document proposes an indexed text encoding format for the SIP Common Log Format (CLF) that retains the key advantages of a text-based format, while significantly increasing processing performance over a purely text-based implementation. This file format adheres to the SIP CLF information model and provides an effective encoding scheme for all mandatory and optional fields that appear in a SIP CLF record.},
}