%% You should probably cite rfc4533 instead of this I-D.
@techreport{zeilenga-ldup-sync-06,
    number =    {draft-zeilenga-ldup-sync-06},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-zeilenga-ldup-sync/06/},
    author =    {Jong Hyuk Choi and Kurt Zeilenga},
    title =     {{The Lightweight Directory Access Protocol (LDAP) Content Synchronization Operation}},
    pagetotal = 32,
    year =      2004,
    month =     sep,
    day =       29,
    abstract =  {This specification describes the Lightweight Directory Access Protocol (LDAP) Content Synchronization Operation. The operation allows a client to maintain a copy of a fragment of the Directory Information Tree (DIT). It supports both polling for changes and listening for changes. The operation is defined as an extension of the LDAP Search Operation. This memo defines an Experimental Protocol for the Internet community.},
}