@misc{rfc6807,
    series =    {Request for Comments},
    number =    6807,
    howpublished =  {RFC 6807},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC6807},
    url =       {https://www.rfc-editor.org/info/rfc6807},
    author =    {Dino Farinacci and Greg Shepherd and Stig Venaas and Yiqun Cai},
    title =     {{Population Count Extensions to Protocol Independent Multicast (PIM)}},
    pagetotal = 15,
    year =      2012,
    month =     dec,
    abstract =  {This specification defines a method for providing multicast distribution-tree accounting data. Simple extensions to the Protocol Independent Multicast (PIM) protocol allow a rough approximation of tree-based data in a scalable fashion. This document defines an Experimental Protocol for the Internet community.},
}