William Allen Simpson. PPP LCP Extensions. RFC, 1570:1-19, January 1994. [doi]
@article{rfc1570,
title = {PPP LCP Extensions},
author = {William Allen Simpson},
year = {1994},
month = {January},
doi = {10.17487/RFC1570},
url = {https://doi.org/10.17487/RFC1570},
researchr = {https://researchr.org/publication/rfc1570},
cites = {0},
citedby = {0},
journal = {RFC},
volume = {1570},
pages = {1-19},
}