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  _____      ___      _____     _____    _____    
 / ____||   / _ \\   |__  //   |  ___|| |  __ \\  
/ //---`'  / //\ \\    / //    | ||__   | |  \ || 
\ \\___   |  ___  ||  / //__   | ||__   | |__/ || 
 \_____|| |_||  |_|| /_____||  |_____|| |_____//  
  `----`  `-`   `-`  `-----`   `-----`   -----`

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Text this: Lamb wave propagation in a metallic semi-infinite medium covered with piezoelectric layer