James Carlson, Richard Winslow. Point-to-Point Protocol (PPP) Vendor Protocol. RFC, 3772:1-10, May 2004. [doi]
@article{rfc3772, title = {Point-to-Point Protocol (PPP) Vendor Protocol}, author = {James Carlson and Richard Winslow}, year = {2004}, month = {May}, doi = {10.17487/RFC3772}, url = {https://doi.org/10.17487/RFC3772}, researchr = {https://researchr.org/publication/rfc3772}, cites = {0}, citedby = {0}, journal = {RFC}, volume = {3772}, pages = {1-10}, }