@article{Even_1965,
    doi = {10.1109/pgec.1965.263996},
    url = {https://doi.org/10.1109%2Fpgec.1965.263996},
    year = {1965},
    month = {aug},
    publisher = {Institute of Electrical and Electronics Engineers ({IEEE})},
    volume = {{EC}-14},
    number = {4},
    pages = {561--569},
    author = {Shimon Even},
    title = {On Information Lossless Automata of Finite Order},
    journal = {{IEEE} Transactions on Electronic Computers}
}

@article{Even_1965, doi = {10.1109/pgec.1965.263996}, url = {https://doi.org/10.1109%2Fpgec.1965.263996}, year = {1965}, month = {aug}, publisher = {Institute of Electrical and Electronics Engineers ({IEEE})}, volume = {{EC}-14}, number = {4}, pages = {561--569}, author = {Shimon Even}, title = {On Information Lossless Automata of Finite Order}, journal = {{IEEE} Transactions on Electronic Computers} }