@article{Dan-Gro-Imp-Kac-2019,
    author={Baffet Daniel and Marcus Grote and Sébastien Imperiale and 
           Maryna Kachanovska },
    title={Energy Decay and Stability of a Perfectly Matched Layer For 
           the Wave Equation },
    doi={10.1007/s10915-019-01089-9 },
    journal={Journal of Scientific Computing },
    year={2019 },
    month={12},
    volume={81 },
    pages={2237--2270},
}