@article{Quine_1946,
    doi = {10.2307/2268308},
    url = {https://doi.org/10.2307%2F2268308},
    year = {1946},
    month = {dec},
    publisher = {Cambridge University Press ({CUP})},
    volume = {11},
    number = {4},
    pages = {105--114},
    author = {W. V. Quine},
    title = {Concatenation as a basis for arithmetic},
    journal = {Journal of Symbolic Logic}
}

@article{Quine_1946, doi = {10.2307/2268308}, url = {https://doi.org/10.2307%2F2268308}, year = {1946}, month = {dec}, publisher = {Cambridge University Press ({CUP})}, volume = {11}, number = {4}, pages = {105--114}, author = {W. V. Quine}, title = {Concatenation as a basis for arithmetic}, journal = {Journal of Symbolic Logic} }