@article{Ben_Or_1986,
    doi = {10.1016/0022-0000(86)90029-2},
    url = {https://doi.org/10.1016%2F0022-0000%2886%2990029-2},
    year = {1986},
    month = {apr},
    publisher = {Elsevier {BV}},
    volume = {32},
    number = {2},
    pages = {251--264},
    author = {Michael Ben-Or and Dexter Kozen and John Reif},
    title = {The complexity of elementary algebra and geometry},
    journal = {Journal of Computer and System Sciences}
}

@article{Ben_Or_1986, doi = {10.1016/0022-0000(86)90029-2}, url = {https://doi.org/10.1016%2F0022-0000%2886%2990029-2}, year = {1986}, month = {apr}, publisher = {Elsevier {BV}}, volume = {32}, number = {2}, pages = {251--264}, author = {Michael Ben-Or and Dexter Kozen and John Reif}, title = {The complexity of elementary algebra and geometry}, journal = {Journal of Computer and System Sciences} }