@article{Jurdzi_ski_2007,
    doi = {10.1016/j.ic.2007.02.003},
    url = {https://doi.org/10.1016%2Fj.ic.2007.02.003},
    year = {2007},
    month = {sep},
    publisher = {Elsevier {BV}},
    volume = {205},
    number = {9},
    pages = {1387--1412},
    author = {Tomasz Jurdzi{\'{n}}ski and Krzysztof Lory{\'{s}}},
    title = {Lower bound technique for length-reducing automata},
    journal = {Information and Computation}
}

@article{Jurdzi_ski_2007, doi = {10.1016/j.ic.2007.02.003}, url = {https://doi.org/10.1016%2Fj.ic.2007.02.003}, year = {2007}, month = {sep}, publisher = {Elsevier {BV}}, volume = {205}, number = {9}, pages = {1387--1412}, author = {Tomasz Jurdzi{\'{n}}ski and Krzysztof Lory{\'{s}}}, title = {Lower bound technique for length-reducing automata}, journal = {Information and Computation} }