@article{Costa_2013,
    doi = {10.1016/j.tcs.2013.05.022},
    url = {https://doi.org/10.1016%2Fj.tcs.2013.05.022},
    year = {2013},
    month = {aug},
    publisher = {Elsevier {BV}},
    volume = {499},
    pages = {2--22},
    author = {Jos{\'{e}} F{\'{e}}lix Costa and Raimundo Leong},
    title = {The {ARNN} model relativises},
    journal = {Theoretical Computer Science}
}

@article{Costa_2013, doi = {10.1016/j.tcs.2013.05.022}, url = {https://doi.org/10.1016%2Fj.tcs.2013.05.022}, year = {2013}, month = {aug}, publisher = {Elsevier {BV}}, volume = {499}, pages = {2--22}, author = {Jos{\'{e}} F{\'{e}}lix Costa and Raimundo Leong}, title = {The {ARNN} model relativises}, journal = {Theoretical Computer Science} }