%% You should probably cite rfc5483 instead of this I-D.
@techreport{ietf-enum-experiences-11,
    number =    {draft-ietf-enum-experiences-11},
    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-enum-experiences/11/},
    author =    {Lawrence W. Conroy and Kazunori Fujiwara},
    title =     {{ENUM Implementation Issues and Experiences}},
    pagetotal = 30,
    year =      2008,
    month =     nov,
    day =       20,
    abstract =  {This document captures experiences in implementing systems based on the ENUM protocol and experiences of ENUM data that have been created by others. As such, it clarifies the ENUM and Dynamic Delegation Discovery System standards. Its aim is to help others by reporting both what is "out there" and potential pitfalls in interpreting the set of documents that specify the ENUM protocol. It does not revise the standards but is intended to provide technical input to future revisions of those documents. This memo provides information for the Internet community.},
}