@article{Nerode_1958,
    doi = {10.1090/s0002-9939-1958-0135681-9},
    url = {https://doi.org/10.1090%2Fs0002-9939-1958-0135681-9},
    year = {1958},
    publisher = {American Mathematical Society ({AMS})},
    volume = {9},
    number = {4},
    pages = {541--544},
    author = {A. Nerode},
    title = {Linear automaton transformations},
    journal = {Proceedings of the American Mathematical Society}
}

@article{Nerode_1958, doi = {10.1090/s0002-9939-1958-0135681-9}, url = {https://doi.org/10.1090%2Fs0002-9939-1958-0135681-9}, year = {1958}, publisher = {American Mathematical Society ({AMS})}, volume = {9}, number = {4}, pages = {541--544}, author = {A. Nerode}, title = {Linear automaton transformations}, journal = {Proceedings of the American Mathematical Society} }