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

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Text this: Effects of downstream system on self-excited oscillations in collapsible tubes