@incollection{Berman_1980,
    doi = {10.1007/3-540-10003-2_62},
    url = {https://doi.org/10.1007%2F3-540-10003-2_62},
    year = {1980},
    publisher = {Springer Berlin Heidelberg},
    pages = {91--97},
    author = {Piotr Berman},
    title = {A note on sweeping automata},
    booktitle = {Automata, Languages and Programming}
}

@incollection{Berman_1980, doi = {10.1007/3-540-10003-2_62}, url = {https://doi.org/10.1007%2F3-540-10003-2_62}, year = {1980}, publisher = {Springer Berlin Heidelberg}, pages = {91--97}, author = {Piotr Berman}, title = {A note on sweeping automata}, booktitle = {Automata, Languages and Programming} }