@article{Tsankov_2011,
    doi = {10.2178/jsl/1318338853},
    url = {https://doi.org/10.2178%2Fjsl%2F1318338853},
    year = {2011},
    month = {dec},
    publisher = {Cambridge University Press ({CUP})},
    volume = {76},
    number = {4},
    pages = {1341--1351},
    author = {Todor Tsankov},
    title = {The additive group of the rationals does not have an automatic presentation},
    journal = {The Journal of Symbolic Logic}
}

@article{Tsankov_2011, doi = {10.2178/jsl/1318338853}, url = {https://doi.org/10.2178%2Fjsl%2F1318338853}, year = {2011}, month = {dec}, publisher = {Cambridge University Press ({CUP})}, volume = {76}, number = {4}, pages = {1341--1351}, author = {Todor Tsankov}, title = {The additive group of the rationals does not have an automatic presentation}, journal = {The Journal of Symbolic Logic} }