@article{Schutzenberger:1968:RAS:321450.321461,
    author = {Marcel-Paul Schützenberger},
    doi = {https://dx.doi.org/10.1145/321450.321461},
    address = {New York, NY, USA},
    file = {A Remark on Acceptable Sets of Numbers - Schutzenberger (0) (0) - a - a - l.pdf},
    issn = {0004-5411},
    journal = {J. ACM},
    month = {April},
    number = {2},
    pages = {300--303},
    publisher = {ACM},
    title = {{A Remark on Acceptable Sets of Numbers}},
    url = {http://doi.acm.org/10.1145/321450.321461},
    volume = {15},
    year = {1968},
    acmid = {321461},
    bdsk-url-1 = {http://doi.acm.org/10.1145/321450.321461},
    bdsk-url-2 = {http://dx.doi.org/10.1145/321450.321461},
    date-added = {2012-12-05 21:56:52 +0000},
    date-modified = {2025-10-16 20:2:5 +0100},
    issue_date = {April 1968},
    numpages = {4}
}

@article{Schutzenberger:1968:RAS:321450.321461, author = {Marcel-Paul Schützenberger}, doi = {https://dx.doi.org/10.1145/321450.321461}, address = {New York, NY, USA}, file = {A Remark on Acceptable Sets of Numbers - Schutzenberger (0) (0) - a - a - l.pdf}, issn = {0004-5411}, journal = {J. ACM}, month = {April}, number = {2}, pages = {300--303}, publisher = {ACM}, title = {{A Remark on Acceptable Sets of Numbers}}, url = {http://doi.acm.org/10.1145/321450.321461}, volume = {15}, year = {1968}, acmid = {321461}, bdsk-url-1 = {http://doi.acm.org/10.1145/321450.321461}, bdsk-url-2 = {http://dx.doi.org/10.1145/321450.321461}, date-added = {2012-12-05 21:56:52 +0000}, date-modified = {2025-10-16 20:2:5 +0100}, issue_date = {April 1968}, numpages = {4} }