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

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