%% You should probably cite rfc6631 instead of this I-D.
@techreport{kuegler-ipsecme-pace-ikev2-09,
    number =    {draft-kuegler-ipsecme-pace-ikev2-09},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-kuegler-ipsecme-pace-ikev2/09/},
    author =    {Dennis Kuegler and Yaron Sheffer},
    title =     {{Password Authenticated Connection Establishment with IKEv2}},
    pagetotal = 25,
    year =      2012,
    month =     mar,
    day =       26,
    abstract =  {IKEv2 does not allow secure peer authentication when using short credential strings, i.e. passwords. Several proposals have been made to integrate password-authentication protocols into IKE. This document provides an adaptation of PACE (Password Authenticated Connection Establishment) to the setting of IKEv2 and demonstrates the advantages of this integration.},
}