%% You should probably cite draft-ietf-ccamp-flexigrid-yang instead of this I-D.
@techreport{vergara-ccamp-flexigrid-yang-04,
    number =    {draft-vergara-ccamp-flexigrid-yang-04},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-vergara-ccamp-flexigrid-yang/04/},
    author =    {Universidad Autonoma de Madrid and Daniel Perdices and Victor Lopez and Oscar Gonzalez de Dios and Daniel King and Young Lee and Gabriele Galimberti},
    title =     {{YANG data model for Flexi-Grid Optical Networks}},
    pagetotal = 32,
    year =      2017,
    month =     mar,
    day =       6,
    abstract =  {This document defines a YANG model for managing flexi-grid optical Networks. The model described in this document is composed of two submodels: one to define a flexi-grid traffic engineering database, and other one to describe the flexi-grid paths or media channels. It is grounded on other defined YANG abstract models.},
}