%% You should probably cite draft-ietf-ace-key-groupcomm-oscore instead of this I-D.
@techreport{tiloca-ace-oscoap-joining-00,
    number =    {draft-tiloca-ace-oscoap-joining-00},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-tiloca-ace-oscoap-joining/00/},
    author =    {Marco Tiloca and Jiye Park},
    title =     {{Joining of OSCOAP multicast groups in ACE}},
    pagetotal = 13,
    year =      ,
    month =     ,
    day =       ,
    abstract =  {This document describes a method to join a multicast group where communications are based on CoAP and secured with Object Security of CoAP (OSCOAP). The proposed method delegates the authentication and authorization of client nodes that join a multicast group through a Group Manager server. This approach builds on the ACE framework for Authentication and Authorization, and leverages protocol-specific profiles of ACE to achieve communication security, proof-of- possession and server authentication.},
}