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            _____     ____     _    _     ______  
  ____     |  ___||  |  _ \\  | || | ||  /_____// 
 |    \\   | ||__    | |_| || | || | ||  `____ `  
 | [] ||   | ||__    | .  //  | \\_/ ||  /___//   
 |  __//   |_____||  |_|\_\\   \____//   `__ `    
 |_|`-`    `-----`   `-` --`    `---`    /_//     
 `-`                                     `-`

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發送短信 : Time-harmonic response of a vertical crack in plates