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

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Text this: Vibration and performance of a subway track system based on the third y K Cheung lecture, Hong Kong, 2009