%% You should probably cite rfc2189 instead of this I-D. @techreport{ietf-idmr-cbt-spec-09, number = {draft-ietf-idmr-cbt-spec-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-ietf-idmr-cbt-spec/09/}, author = {Anthony J. Ballardie}, title = {{Core Based Trees (CBT version 2) Multicast Routing -- Protocol Specification --}}, pagetotal = 23, year = 1997, month = may, day = 20, abstract = {This document describes the Core Based Tree (CBT version 2) network layer multicast routing protocol. CBT builds a shared multicast distribution tree per group, and is suited to inter- and intra-domain multicast routing. This memo defines an Experimental Protocol for the Internet community.}, }