@incollection{Pin,
    doi = {10.1007/bfb0036488},
    url = {https://doi.org/10.1007%2Fbfb0036488},
    publisher = {Springer-Verlag},
    pages = {277--288},
    author = {J. -E. Pin and J. Sakarovitch},
    title = {Some operations and transductions that preserve rationality},
    booktitle = {Lecture Notes in Computer Science}
}

@incollection{Pin, doi = {10.1007/bfb0036488}, url = {https://doi.org/10.1007%2Fbfb0036488}, publisher = {Springer-Verlag}, pages = {277--288}, author = {J. -E. Pin and J. Sakarovitch}, title = {Some operations and transductions that preserve rationality}, booktitle = {Lecture Notes in Computer Science} }