%% You should probably cite draft-ietf-ace-dtls-authorize instead of this I-D.
@techreport{gerdes-ace-dtls-authorize-01,
    number =    {draft-gerdes-ace-dtls-authorize-01},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-gerdes-ace-dtls-authorize/01/},
    author =    {Stefanie Gerdes and Olaf Bergmann and Carsten Bormann and Göran Selander and Ludwig Seitz},
    title =     {{Datagram Transport Layer Security (DTLS) Profile for Authentication and Authorization for Constrained Environments (ACE)}},
    pagetotal = 17,
    year =      2017,
    month =     mar,
    day =       13,
    abstract =  {This specification defines a profile for delegating client authentication and authorization in a constrained environment by establishing a Datagram Transport Layer Security (DTLS) channel between resource-constrained nodes. The protocol relies on DTLS for communication security between entities in a constrained network. A resource-constrained node can use this protocol to delegate management of authorization information to a trusted host with less severe limitations regarding processing power and memory.},
}