@article{Asperti_2015,
    doi = {10.1016/j.tcs.2015.07.013},
    url = {https://doi.org/10.1016%2Fj.tcs.2015.07.013},
    year = {2015},
    month = {oct},
    publisher = {Elsevier {BV}},
    volume = {603},
    pages = {23--42},
    author = {Andrea Asperti and Wilmer Ricciotti},
    title = {A formalization of multi-tape Turing machines},
    journal = {Theoretical Computer Science}
}

@article{Asperti_2015, doi = {10.1016/j.tcs.2015.07.013}, url = {https://doi.org/10.1016%2Fj.tcs.2015.07.013}, year = {2015}, month = {oct}, publisher = {Elsevier {BV}}, volume = {603}, pages = {23--42}, author = {Andrea Asperti and Wilmer Ricciotti}, title = {A formalization of multi-tape Turing machines}, journal = {Theoretical Computer Science} }