@article{Brzozowski_1973,
    doi = {10.1016/s0012-365x(73)80005-6},
    url = {https://doi.org/10.1016%2Fs0012-365x%2873%2980005-6},
    year = {1973},
    month = {mar},
    publisher = {Elsevier {BV}},
    volume = {4},
    number = {3},
    pages = {243--271},
    author = {J.A. Brzozowski and Imre Simon},
    title = {Characterizations of locally testable events},
    journal = {Discrete Mathematics}
}

@article{Brzozowski_1973, doi = {10.1016/s0012-365x(73)80005-6}, url = {https://doi.org/10.1016%2Fs0012-365x%2873%2980005-6}, year = {1973}, month = {mar}, publisher = {Elsevier {BV}}, volume = {4}, number = {3}, pages = {243--271}, author = {J.A. Brzozowski and Imre Simon}, title = {Characterizations of locally testable events}, journal = {Discrete Mathematics} }