@article{Johnson_1974,
    doi = {10.1145/1086837.1086847},
    url = {https://doi.org/10.1145%2F1086837.1086847},
    year = {1974},
    month = {aug},
    publisher = {Association for Computing Machinery ({ACM})},
    volume = {8},
    number = {3},
    pages = {63--71},
    author = {Stephen C. Johnson},
    title = {Sparse polynomial arithmetic},
    journal = {{ACM} {SIGSAM} Bulletin}
}

@article{Johnson_1974, doi = {10.1145/1086837.1086847}, url = {https://doi.org/10.1145%2F1086837.1086847}, year = {1974}, month = {aug}, publisher = {Association for Computing Machinery ({ACM})}, volume = {8}, number = {3}, pages = {63--71}, author = {Stephen C. Johnson}, title = {Sparse polynomial arithmetic}, journal = {{ACM} {SIGSAM} Bulletin} }