%% You should probably cite rfc1659 instead of this I-D.
@techreport{ietf-charmib-rs232-mib-03,
    number =    {draft-ietf-charmib-rs232-mib-03},
    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-charmib-rs232-mib/03/},
    author =    {Bob Stewart},
    title =     {{Definitions of Managed Objects for RS-232-like Hardware Devices using SMIv2}},
    pagetotal = 21,
    year =      1994,
    month =     may,
    day =       26,
    abstract =  {This memo defines an extension to the Management Information Base (MIB) for use with network management protocols in the Internet community. In particular, it defines objects for the management of RS-232-like devices. {[}STANDARDS-TRACK{]}},
}