@incollection{Maler_1993,
    doi = {10.1007/3-540-56503-5_58},
    url = {https://doi.org/10.1007%2F3-540-56503-5_58},
    year = {1993},
    publisher = {Springer Berlin Heidelberg},
    pages = {586--594},
    author = {Oded Maler and Ludwig Staiger},
    title = {On syntactic congruences for {$\omega$}-languages},
    booktitle = {Lecture Notes in Computer Science}
}

@incollection{Maler_1993, doi = {10.1007/3-540-56503-5_58}, url = {https://doi.org/10.1007%2F3-540-56503-5_58}, year = {1993}, publisher = {Springer Berlin Heidelberg}, pages = {586--594}, author = {Oded Maler and Ludwig Staiger}, title = {On syntactic congruences for {$\omega$}-languages}, booktitle = {Lecture Notes in Computer Science} }