%% You should probably cite draft-ietf-acme-integrations instead of this I-D.
@techreport{friel-acme-integrations-00,
    number =    {draft-friel-acme-integrations-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-friel-acme-integrations/00/},
    author =    {Owen Friel and Richard Barnes},
    title =     {{ACME Integrations}},
    pagetotal = 14,
    year =      ,
    month =     ,
    day =       ,
    abstract =  {This document outlines multiple advanced use cases and integrations that ACME facilitates without any modifications or enhancements required to the base ACME specification. These use cases are not immediately obvious from reading the ACME specification and thus are explicitly documented here. The use cases include ACME issuance of subdomain certificates, and ACME integration with EST and TEAP.},
}