TY - CONF T1 - A consideration of impedance matching issues with metamaterials JO - 40th International Congress and Exposition on Noise Control Engineering 2011 Inter Noise 2011 PY - 2011/12/01 AU - Pope SA AU - Pelegrinis M AU - Daley S ED - VL - 3 SP - 2013 EP - 2021 Y2 - 2025/10/31 ER -