@article{Gilman_1996,
    doi = {10.1016/0304-3975(96)00244-7},
    url = {https://doi.org/10.1016%2F0304-3975%2896%2900244-7},
    year = {1996},
    month = {aug},
    publisher = {Elsevier {BV}},
    volume = {163},
    number = {1-2},
    pages = {277--281},
    author = {Robert H. Gilman},
    title = {A shrinking lemma for indexed languages},
    journal = {Theoretical Computer Science}
}

@article{Gilman_1996, doi = {10.1016/0304-3975(96)00244-7}, url = {https://doi.org/10.1016%2F0304-3975%2896%2900244-7}, year = {1996}, month = {aug}, publisher = {Elsevier {BV}}, volume = {163}, number = {1-2}, pages = {277--281}, author = {Robert H. Gilman}, title = {A shrinking lemma for indexed languages}, journal = {Theoretical Computer Science} }