@article{Sikkel_1998,
    doi = {10.1016/s0304-3975(97)00269-7},
    url = {https://doi.org/10.1016%2Fs0304-3975%2897%2900269-7},
    year = {1998},
    month = {jun},
    publisher = {Elsevier {BV}},
    volume = {199},
    number = {1-2},
    pages = {87--103},
    author = {Klaas Sikkel},
    title = {Parsing schemata and correctness of parsing algorithms},
    journal = {Theoretical Computer Science}
}

@article{Sikkel_1998, doi = {10.1016/s0304-3975(97)00269-7}, url = {https://doi.org/10.1016%2Fs0304-3975%2897%2900269-7}, year = {1998}, month = {jun}, publisher = {Elsevier {BV}}, volume = {199}, number = {1-2}, pages = {87--103}, author = {Klaas Sikkel}, title = {Parsing schemata and correctness of parsing algorithms}, journal = {Theoretical Computer Science} }