%% You should probably cite draft-ietf-mpls-ttl instead of this I-D. @techreport{agarwal-mpls-ttl-01, number = {draft-agarwal-mpls-ttl-01}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-agarwal-mpls-ttl/01/}, author = {Puneet Agarwal and Bora Akyol}, title = {{TTL Processing in MPLS Networks}}, pagetotal = 9, year = 2001, month = oct, day = 9, abstract = {This document describes TTL processing in hierarchical MPLS networks.}, }