@article{Straubing_2018,
    doi = {10.1145/3242953.3242956},
    url = {https://doi.org/10.1145%2F3242953.3242956},
    year = {2018},
    month = {jul},
    publisher = {Association for Computing Machinery ({ACM})},
    volume = {5},
    number = {3},
    pages = {4--20},
    author = {Howard Straubing},
    title = {First-order logic and aperiodic languages},
    journal = {{ACM} {SIGLOG} News}
}

@article{Straubing_2018, doi = {10.1145/3242953.3242956}, url = {https://doi.org/10.1145%2F3242953.3242956}, year = {2018}, month = {jul}, publisher = {Association for Computing Machinery ({ACM})}, volume = {5}, number = {3}, pages = {4--20}, author = {Howard Straubing}, title = {First-order logic and aperiodic languages}, journal = {{ACM} {SIGLOG} News} }