%% You should probably cite draft-barnes-acme-service-provider-01 instead of this revision.
@techreport{barnes-acme-service-provider-00,
    number =    {draft-barnes-acme-service-provider-00},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-barnes-acme-service-provider/00/},
    author =    {Mary Barnes and Chris Wendt},
    title =     {{ACME Identifiers and Challenges for VoIP Service Providers}},
    pagetotal = 8,
    year =      2017,
    month =     mar,
    day =       13,
    abstract =  {This document specifies identifiers and challenges required to enable the Automated Certificate Management Environment (ACME) to issue certificates for VoIP service providers to support Secure Telephony Identity (STI).},
}