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  ______   __   __    ______     ___     _    _   
 /_____//  \ \\/ //  /_____//   / _ \\  | \  / || 
 `____ `    \ ` //   `____ `   / //\ \\ |  \/  || 
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 `__ `       |_||    `__ `    |_||  |_|||_|\/|_|| 
 /_//        `-`'    /_//     `-`   `-` `-`  `-`  
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Text this: On stability of rotordynamic systems with rotor-stator contact interaction