@inproceedings{Had-Hel-Mat-2003,
    author={Houssem Haddar and Thomas Helie and Denis Matignon },
    title={A Webster-Lokshin model for waves with viscothermal losses and 
           impedance boundary conditions: strong solutions },
    organization={Mathematical and numerical aspects of wave propagation, 
           Jyväskylä , Finland },
    year={2003 },
    pages={66--71},
    publisher={Springer },
}