% Datatracker information for RFCs on the Legacy Stream is unfortunately often
% incorrect. Please correct the bibtex below based on the information available
% at https://www.rfc-editor.org/info/rfc491/

@misc{rfc491,
    series =    {Request for Comments},
    number =    491,
    howpublished =  {RFC 491},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC491},
    url =       {https://www.rfc-editor.org/info/rfc491/},
    author =    {M.A. Padlipsky},
    title =     {{What is "Free"?}},
    pagetotal = 2,
    year =      1973,
    month =     apr,
    day =       1,
    abstract =  {},
}