@article{Johnson_2009,
    doi = {10.1016/j.cam.2008.10.014},
    url = {https://doi.org/10.1016%2Fj.cam.2008.10.014},
    year = {2009},
    month = {jun},
    publisher = {Elsevier {BV}},
    volume = {228},
    number = {1},
    pages = {418--423},
    author = {Tomas Johnson and Warwick Tucker},
    title = {Enclosing all zeros of an analytic function - A rigorous approach},
    journal = {Journal of Computational and Applied Mathematics}
}

@article{Johnson_2009, doi = {10.1016/j.cam.2008.10.014}, url = {https://doi.org/10.1016%2Fj.cam.2008.10.014}, year = {2009}, month = {jun}, publisher = {Elsevier {BV}}, volume = {228}, number = {1}, pages = {418--423}, author = {Tomas Johnson and Warwick Tucker}, title = {Enclosing all zeros of an analytic function - A rigorous approach}, journal = {Journal of Computational and Applied Mathematics} }