%% You should probably cite rfc5697 instead of this I-D.
@techreport{ietf-pkix-other-certs-05,
    number =    {draft-ietf-pkix-other-certs-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-pkix-other-certs/05/},
    author =    {Stephen Farrell},
    title =     {{Other Certificates Extension}},
    pagetotal = 8,
    year =      2009,
    month =     sep,
    day =       13,
    abstract =  {Some applications that associate state information with public key certificates can benefit from a way to link together a set of certificates that belong to the same end entity and that can safely be considered equivalent to one another for the purposes of referencing that application-state information. This memo defines a certificate extension that allows applications to establish the required linkage without introducing a new application protocol data unit. This memo defines an Experimental Protocol for the Internet community.},
}