@incollection{Perrin,
    doi = {10.1007/bfb0030294},
    url = {https://doi.org/10.1007%2Fbfb0030294},
    publisher = {Springer-Verlag},
    pages = {134--148},
    author = {Dominique Perrin},
    title = {Recent results on automata and infinite words},
    booktitle = {Mathematical Foundations of Computer Science 1984}
}

@incollection{Perrin, doi = {10.1007/bfb0030294}, url = {https://doi.org/10.1007%2Fbfb0030294}, publisher = {Springer-Verlag}, pages = {134--148}, author = {Dominique Perrin}, title = {Recent results on automata and infinite words}, booktitle = {Mathematical Foundations of Computer Science 1984} }