%% You should probably cite rfc9176 instead of this I-D.
@techreport{ietf-core-resource-directory-28,
    number =    {draft-ietf-core-resource-directory-28},
    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-core-resource-directory/28/},
    author =    {Christian Amsüss and Zach Shelby and Michael Koster and Carsten Bormann and Peter Van der Stok},
    title =     {{Constrained RESTful Environments (CoRE) Resource Directory}},
    pagetotal = 60,
    year =      2021,
    month =     mar,
    day =       7,
    abstract =  {In many Internet of Things (IoT) applications, direct discovery of resources is not practical due to sleeping nodes or networks where multicast traffic is inefficient. These problems can be solved by employing an entity called a Resource Directory (RD), which contains information about resources held on other servers, allowing lookups to be performed for those resources. The input to an RD is composed of links, and the output is composed of links constructed from the information stored in the RD. This document specifies the web interfaces that an RD supports for web servers to discover the RD and to register, maintain, look up, and remove information on resources. Furthermore, new target attributes useful in conjunction with an RD are defined.},
}