%% You should probably cite rfc8147 instead of this I-D.
@techreport{ietf-ecrit-ecall-22,
    number =    {draft-ietf-ecrit-ecall-22},
    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-ecrit-ecall/22/},
    author =    {Randall Gellens and Hannes Tschofenig},
    title =     {{Next-Generation Pan-European eCall}},
    pagetotal = 46,
    year =      2017,
    month =     jan,
    day =       11,
    abstract =  {This document describes how to use IP-based emergency services mechanisms to support the next generation of the pan European in- vehicle emergency call service defined under the eSafety initiative of the European Commission (generally referred to as "eCall"). eCall is a standardized and mandated system for a special form of emergency calls placed by vehicles, providing real-time communications and an integrated set of related data. This document also registers MIME media types and an Emergency Call Additional Data Block for the eCall vehicle data and metadata/control data, and an INFO package to enable carrying this data in SIP INFO requests. Although this specification is designed to meet the requirements of European next-generation eCall, it is specified generically such that the technology can be re-used or extended to suit requirements across jurisdictions.},
}