@article{Omri_2009,
    doi = {10.1016/j.apal.2007.02.004},
    url = {https://doi.org/10.1016%2Fj.apal.2007.02.004},
    year = {2009},
    month = {apr},
    publisher = {Elsevier {BV}},
    volume = {158},
    number = {3},
    pages = {156--162},
    author = {Eran Omri and Andreas Weiermann},
    title = {Classifying the phase transition threshold for Ackermannian functions},
    journal = {Annals of Pure and Applied Logic}
}

@article{Omri_2009, doi = {10.1016/j.apal.2007.02.004}, url = {https://doi.org/10.1016%2Fj.apal.2007.02.004}, year = {2009}, month = {apr}, publisher = {Elsevier {BV}}, volume = {158}, number = {3}, pages = {156--162}, author = {Eran Omri and Andreas Weiermann}, title = {Classifying the phase transition threshold for Ackermannian functions}, journal = {Annals of Pure and Applied Logic} }