@article{RICHARDSON_1997,
    doi = {10.1006/jsco.1997.0157},
    url = {https://doi.org/10.1006%2Fjsco.1997.0157},
    year = {1997},
    month = {dec},
    publisher = {Elsevier {BV}},
    volume = {24},
    number = {6},
    pages = {627--645},
    author = {DANIEL RICHARDSON},
    title = {How to Recognize Zero},
    journal = {Journal of Symbolic Computation}
}

@article{RICHARDSON_1997, doi = {10.1006/jsco.1997.0157}, url = {https://doi.org/10.1006%2Fjsco.1997.0157}, year = {1997}, month = {dec}, publisher = {Elsevier {BV}}, volume = {24}, number = {6}, pages = {627--645}, author = {DANIEL RICHARDSON}, title = {How to Recognize Zero}, journal = {Journal of Symbolic Computation} }