@article{molnar2018nonlin_semidiscretization,
    title={Bifurcation analysis of nonlinear time-periodic time-delay systems via semidiscretization},
    author={Molnar, Tamas Gabor and Dombovari, Zoltan and Insperger, Tamas and Stepan, Gabor},
    journal={International Journal for Numerical Methods in Engineering},
    volume={115},
    number={1},
    year={2018},
    doi={10.1002/nme.5795}
}