@article{Laohakosol_2009,
    doi = {10.1016/j.dam.2009.06.021},
    url = {https://doi.org/10.1016%2Fj.dam.2009.06.021},
    year = {2009},
    month = {aug},
    publisher = {Elsevier {BV}},
    volume = {157},
    number = {15},
    pages = {3239--3248},
    author = {Vichian Laohakosol and Pinthira Tangsupphathawat},
    title = {Positivity of third order linear recurrence sequences},
    journal = {Discrete Applied Mathematics}
}

@article{Laohakosol_2009, doi = {10.1016/j.dam.2009.06.021}, url = {https://doi.org/10.1016%2Fj.dam.2009.06.021}, year = {2009}, month = {aug}, publisher = {Elsevier {BV}}, volume = {157}, number = {15}, pages = {3239--3248}, author = {Vichian Laohakosol and Pinthira Tangsupphathawat}, title = {Positivity of third order linear recurrence sequences}, journal = {Discrete Applied Mathematics} }