@article{lehotzky2018hybrid,
    title={Numerical methods for the stability of time-periodic hybrid time-delay systems with applications},
    author={Lehotzky, David and Insperger, Tamas and Stepan, Gabor},
    journal={Applied Mathematical Modelling},
    volume={57},
    pages={142--162},
    year={2018},
    doi={10.1016/j.apm.2017.12.029}
}