@article{Ngu-Tre-Haz-2015,
    author={Khac Long Nguyen and Fabien Treyssède and Christophe Hazard },
    title={Numerical modeling of three-dimensional open elastic 
           waveguides combining semi-analytical finite element and 
           perfectly matched layer methods },
    doi={10.1016/j.jsv.2014.12.032 },
    journal={Journal of Sound and Vibration },
    year={2015 },
    volume={344 },
    pages={158--178},
}