@article{Sakamoto_2000,
    doi = {10.1016/s0304-3975(99)00105-x},
    url = {https://doi.org/10.1016%2Fs0304-3975%2899%2900105-x},
    year = {2000},
    month = {jan},
    publisher = {Elsevier {BV}},
    volume = {231},
    number = {2},
    pages = {297--308},
    author = {Hiroshi Sakamoto and Daisuke Ikeda},
    title = {Intractability of decision problems for finite-memory automata},
    journal = {Theoretical Computer Science}
}

@article{Sakamoto_2000, doi = {10.1016/s0304-3975(99)00105-x}, url = {https://doi.org/10.1016%2Fs0304-3975%2899%2900105-x}, year = {2000}, month = {jan}, publisher = {Elsevier {BV}}, volume = {231}, number = {2}, pages = {297--308}, author = {Hiroshi Sakamoto and Daisuke Ikeda}, title = {Intractability of decision problems for finite-memory automata}, journal = {Theoretical Computer Science} }