%% You should probably cite rfc6488 instead of this I-D.
@techreport{ietf-sidr-signed-object-04,
    number =    {draft-ietf-sidr-signed-object-04},
    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-sidr-signed-object/04/},
    author =    {Matt Lepinski and Andrew Chi and Stephen Kent},
    title =     {{Signed Object Template for the Resource Public Key Infrastructure (RPKI)}},
    pagetotal = 13,
    year =      2011,
    month =     may,
    day =       10,
    abstract =  {This document defines a generic profile for signed objects used in the Resource Public Key Infrastructure (RPKI). These RPKI signed objects make use of Cryptographic Message Syntax (CMS) as a standard encapsulation format. {[}STANDARDS-TRACK{]}},
}