@article{Anisimov_1974,
    doi = {10.1007/bf01071030},
    url = {https://doi.org/10.1007%2Fbf01071030},
    year = {1974},
    publisher = {Springer Science and Business Media {LLC}},
    volume = {7},
    number = {4},
    pages = {594--601},
    author = {A. V. Anisimov},
    title = {Group languages},
    journal = {Cybernetics}
}

@article{Anisimov_1974, doi = {10.1007/bf01071030}, url = {https://doi.org/10.1007%2Fbf01071030}, year = {1974}, publisher = {Springer Science and Business Media {LLC}}, volume = {7}, number = {4}, pages = {594--601}, author = {A. V. Anisimov}, title = {Group languages}, journal = {Cybernetics} }