%% You should probably cite rfc3505 instead of this I-D.
@techreport{ietf-trade-ecml2-req-05,
    number =    {draft-ietf-trade-ecml2-req-05},
    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-trade-ecml2-req/05/},
    author =    {Donald E. Eastlake 3rd},
    title =     {{Electronic Commerce Modeling Language (ECML): Version 2 Requirements}},
    pagetotal = 8,
    year =      2002,
    month =     may,
    day =       8,
    abstract =  {This document lists the design principles, scope, and requirements for the Electronic Commerce Modeling Language (ECML) version 2 specification. It includes requirements as they relate to Extensible Markup Language (XML) syntax, data model, format, and payment processing. This memo provides information for the Internet community.},
}