@article{Kuich_1970,
    title = {Languages and the enumeration of planted plane trees},
    volume = {73},
    issn = {1385-7258},
    url = {http://dx.doi.org/10.1016/S1385-7258(70)80032-4},
    doi = {10.1016/s1385-7258(70)80032-4},
    journal = {Indagationes Mathematicae (Proceedings)},
    publisher = {Elsevier BV},
    author = {Kuich, Werner},
    year = {1970},
    pages = {268–280},
    date-added = {2025-11-3 8:54:21 +0100}
}

@article{Kuich_1970, title = {Languages and the enumeration of planted plane trees}, volume = {73}, issn = {1385-7258}, url = {http://dx.doi.org/10.1016/S1385-7258(70)80032-4}, doi = {10.1016/s1385-7258(70)80032-4}, journal = {Indagationes Mathematicae (Proceedings)}, publisher = {Elsevier BV}, author = {Kuich, Werner}, year = {1970}, pages = {268–280}, date-added = {2025-11-3 8:54:21 +0100} }