@article{Bon-Naz-2013,
    author={Anne-Sophie Bonnet-BenDhia and Sergei Nazarov },
    title={Obstacles in acoustic waveguides becoming "invisible" at given 
           frequencies },
    doi={10.1134/S1063771013050047 },
    journal={Acoustical Physics },
    year={2013 },
    month={11},
    volume={59(6) },
    pages={633--639},
}