Yakov Rekhter, Eric C. Rosen. Carrying Label Information in BGP-4. RFC, 3107:1-8, May 2001. [doi]
@article{rfc3107, title = {Carrying Label Information in BGP-4}, author = {Yakov Rekhter and Eric C. Rosen}, year = {2001}, month = {May}, doi = {10.17487/RFC3107}, url = {https://doi.org/10.17487/RFC3107}, researchr = {https://researchr.org/publication/rfc3107}, cites = {0}, citedby = {0}, journal = {RFC}, volume = {3107}, pages = {1-8}, }