@article{Eilenberg_1976,
    author = {Samuel Eilenberg and Marcel-Paul Schützenberger},
    doi = {https://dx.doi.org/10.1016/0001-8708(76)90029-3},
    title = {{On pseudovarieties}},
    volume = {19},
    issn = {0001-8708},
    url = {http://dx.doi.org/10.1016/0001-8708(76)90029-3},
    number = {3},
    journal = {Advances in Mathematics},
    publisher = {Elsevier BV},
    year = {1976},
    month = {mar},
    pages = {413–418},
    date-added = {2025-3-28 10:59:9 +0100},
    date-modified = {2025-10-16 20:10:29 +0100}
}

@article{Eilenberg_1976, author = {Samuel Eilenberg and Marcel-Paul Schützenberger}, doi = {https://dx.doi.org/10.1016/0001-8708(76)90029-3}, title = {{On pseudovarieties}}, volume = {19}, issn = {0001-8708}, url = {http://dx.doi.org/10.1016/0001-8708(76)90029-3}, number = {3}, journal = {Advances in Mathematics}, publisher = {Elsevier BV}, year = {1976}, month = {mar}, pages = {413–418}, date-added = {2025-3-28 10:59:9 +0100}, date-modified = {2025-10-16 20:10:29 +0100} }