@inproceedings{Cobham_1966,
    doi = {10.1109/swat.1966.30},
    url = {https://doi.org/10.1109%2Fswat.1966.30},
    year = {1966},
    month = {oct},
    publisher = {{IEEE}},
    author = {Alan Cobham},
    title = {The recognition problem for the set of perfect squares},
    booktitle = {7th Annual Symposium on Switching and Automata Theory (swat 1966)}
}

@inproceedings{Cobham_1966, doi = {10.1109/swat.1966.30}, url = {https://doi.org/10.1109%2Fswat.1966.30}, year = {1966}, month = {oct}, publisher = {{IEEE}}, author = {Alan Cobham}, title = {The recognition problem for the set of perfect squares}, booktitle = {7th Annual Symposium on Switching and Automata Theory (swat 1966)} }