@inproceedings{Ouaknine_2013,
    doi = {10.1137/1.9781611973402.27},
    url = {https://doi.org/10.1137%2F1.9781611973402.27},
    year = {2013},
    month = {dec},
    publisher = {Society for Industrial and Applied Mathematics},
    author = {Joël Ouaknine and James Worrell},
    title = {Positivity Problems for Low-Order Linear Recurrence Sequences},
    booktitle = {Proceedings of the Twenty-Fifth Annual {ACM}-{SIAM} Symposium on Discrete Algorithms}
}

@inproceedings{Ouaknine_2013, doi = {10.1137/1.9781611973402.27}, url = {https://doi.org/10.1137%2F1.9781611973402.27}, year = {2013}, month = {dec}, publisher = {Society for Industrial and Applied Mathematics}, author = {Joël Ouaknine and James Worrell}, title = {Positivity Problems for Low-Order Linear Recurrence Sequences}, booktitle = {Proceedings of the Twenty-Fifth Annual {ACM}-{SIAM} Symposium on Discrete Algorithms} }