@article{Krob_1991,
    title = {Some examples of formal series used in non-commutative algebra},
    volume = {79},
    issn = {0304-3975},
    url = {http://dx.doi.org/10.1016/0304-3975(91)90146-S},
    doi = {10.1016/0304-3975(91)90146-s},
    number = {1},
    journal = {Theoretical Computer Science},
    publisher = {Elsevier BV},
    author = {Krob, Daniel},
    year = {1991},
    month = {feb},
    pages = {111–135},
    date-added = {2025-1-20 18:7:12 +0100}
}

@article{Krob_1991, title = {Some examples of formal series used in non-commutative algebra}, volume = {79}, issn = {0304-3975}, url = {http://dx.doi.org/10.1016/0304-3975(91)90146-S}, doi = {10.1016/0304-3975(91)90146-s}, number = {1}, journal = {Theoretical Computer Science}, publisher = {Elsevier BV}, author = {Krob, Daniel}, year = {1991}, month = {feb}, pages = {111–135}, date-added = {2025-1-20 18:7:12 +0100} }