@conference{Bon-Mer-Mil-2011-1,
    author={Anne-Sophie Bonnet-BenDhia and Jean-François Mercier and 
           Florence Millot },
    title={Time harmonic acoustic scattering in presence of a shear flow 
           and an impedance boundary condition },
    publisher={10th International Conference on Mathematical and Numerical 
           Aspects of Wave Propagation (WAVES'11), Vancouver },
    year={2011 },
    month={7},
}