@incollection{McCarthy_1963,
    doi = {10.1016/s0049-237x(08)72018-4},
    url = {https://doi.org/10.1016%2Fs0049-237x%2808%2972018-4},
    year = {1963},
    publisher = {Elsevier},
    pages = {33--70},
    author = {John McCarthy},
    title = {A Basis for a Mathematical Theory of Computation)},
    booktitle = {Computer Programming and Formal Systems}
}

@incollection{McCarthy_1963, doi = {10.1016/s0049-237x(08)72018-4}, url = {https://doi.org/10.1016%2Fs0049-237x%2808%2972018-4}, year = {1963}, publisher = {Elsevier}, pages = {33--70}, author = {John McCarthy}, title = {A Basis for a Mathematical Theory of Computation)}, booktitle = {Computer Programming and Formal Systems} }